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8e0b1729
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2018-10-05T19:32:10
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Merge pull request #4834 from pks-t/pks/v0.27.5
Security release v0.27.5
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c590b41f
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2018-09-06T13:14:40
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version: raise to v0.27.5
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2f158e5b
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2018-09-06T13:14:19
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CHANGELOG: update for v0.27.5
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a221f58e
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2018-10-05T11:47:39
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submodule: ignore path and url attributes if they look like options
These can be used to inject options in an implementation which performs a
recursive clone by executing an external command via crafted url and path
attributes such that it triggers a local executable to be run.
The library is not vulnerable as we do not rely on external executables but a
user of the library might be relying on that so we add this protection.
This matches this aspect of git's fix for CVE-2018-17456.
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34597d10
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2018-10-05T11:42:00
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submodule: add failing test for option-injection protection in url and path
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614c266d
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2018-10-05T10:56:02
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config_file: properly ignore includes without "path" value
In case a configuration includes a key "include.path=" without any
value, the generated configuration entry will have its value set to
`NULL`. This is unexpected by the logic handling includes, and as soon
as we try to calculate the included path we will unconditionally
dereference that `NULL` pointer and thus segfault.
Fix the issue by returning early in both `parse_include` and
`parse_conditional_include` in case where the `file` argument is `NULL`.
Add a test to avoid future regression.
The issue has been found by the oss-fuzz project, issue 10810.
(cherry picked from commit d06d4220eec035466d1a837972a40546b8904330)
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aa220b0f
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2018-10-05T10:55:29
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tests: always unlink created config files
While our tests in config::include create a plethora of configuration
files, most of them do not get removed at the end of each test. This can
cause weird interactions with tests that are being run at a later stage
if these later tests try to create files or directories with the same
name as any of the created configuration files.
Fix the issue by unlinking all created files at the end of these tests.
(cherry picked from commit bf662f7cf8daff2357923446cf9d22f5d4b4a66b)
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f5c3442b
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2018-10-03T16:17:21
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smart_pkt: do not accept callers passing in no line length
Right now, we simply ignore the `linelen` parameter of
`git_pkt_parse_line` in case the caller passed in zero. But in fact, we
never want to assume anything about the provided buffer length and
always want the caller to pass in the available number of bytes.
And in fact, checking all the callers, one can see that the funciton is
never being called in case where the buffer length is zero, and thus we
are safe to remove this check.
(cherry picked from commit 1bc5b05c614c7b10de021fa392943e8e6bd12c77)
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f7c3f6cc
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2018-08-09T11:16:15
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smart_pkt: return parsed length via out-parameter
The `parse_len` function currently directly returns the parsed length of
a packet line or an error code in case there was an error. Instead,
convert this to our usual style of using the return value as error code
only and returning the actual value via an out-parameter. Thus, we can
now convert the output parameter to an unsigned type, as the size of a
packet cannot ever be negative.
While at it, we also move the check whether the input buffer is long
enough into `parse_len` itself. We don't really want to pass around
potentially non-NUL-terminated buffers to functions without also passing
along the length, as this is dangerous in the unlikely case where other
callers for that function get added. Note that we need to make sure
though to not mess with `GIT_EBUFS` error codes, as these indicate not
an error to the caller but that he needs to fetch more data.
(cherry picked from commit c05790a8a8dd4351e61fc06c0a06c6a6fb6134dc)
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7e3cd611
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2018-08-09T11:13:59
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smart_pkt: reorder and rename parameters of `git_pkt_parse_line`
The parameters of the `git_pkt_parse_line` function are quite confusing.
First, there is no real indicator what the `out` parameter is actually
all about, and it's not really clear what the `bufflen` parameter refers
to. Reorder and rename the parameters to make this more obvious.
(cherry picked from commit 0b3dfbf425d689101663341beb94237614f1b5c2)
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356f60f4
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2018-08-09T11:04:42
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smart_pkt: fix buffer overflow when parsing "unpack" packets
When checking whether an "unpack" packet returned the "ok" status or
not, we use a call to `git__prefixcmp`. In case where the passed line
isn't properly NUL terminated, though, this may overrun the line buffer.
Fix this by using `git__prefixncmp` instead.
(cherry picked from commit 5fabaca801e1f5e7a1054be612e8fabec7cd6a7f)
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b5b7c303
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2018-08-09T11:03:37
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smart_pkt: fix "ng" parser accepting non-space character
When parsing "ng" packets, we blindly assume that the character
immediately following the "ng" prefix is a space and skip it. As the
calling function doesn't make sure that this is the case, we can thus
end up blindly accepting an invalid packet line.
Fix the issue by using `git__prefixncmp`, checking whether the line
starts with "ng ".
(cherry picked from commit b5ba7af2d30c958b090dcf135749d9afe89ec703)
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319f0c03
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2018-08-09T11:01:00
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smart_pkt: fix buffer overflow when parsing "ok" packets
There are two different buffer overflows present when parsing "ok"
packets. First, we never verify whether the line already ends after
"ok", but directly go ahead and also try to skip the expected space
after "ok". Second, we then go ahead and use `strchr` to scan for the
terminating newline character. But in case where the line isn't
terminated correctly, this can overflow the line buffer.
Fix the issues by using `git__prefixncmp` to check for the "ok " prefix
and only checking for a trailing '\n' instead of using `memchr`. This
also fixes the issue of us always requiring a trailing '\n'.
Reported by oss-fuzz, issue 9749:
Crash Type: Heap-buffer-overflow READ {*}
Crash Address: 0x6310000389c0
Crash State:
ok_pkt
git_pkt_parse_line
git_smart__store_refs
Sanitizer: address (ASAN)
(cherry picked from commit a9f1ca09178af0640963e069a2142d5ced53f0b4)
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0599c267
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2018-08-09T10:38:10
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smart_pkt: fix buffer overflow when parsing "ACK" packets
We are being quite lenient when parsing "ACK" packets. First, we didn't
correctly verify that we're not overrunning the provided buffer length,
which we fix here by using `git__prefixncmp` instead of
`git__prefixcmp`. Second, we do not verify that the actual contents make
any sense at all, as we simply ignore errors when parsing the ACKs OID
and any unknown status strings. This may result in a parsed packet
structure with invalid contents, which is being silently passed to the
caller. This is being fixed by performing proper input validation and
checking of return codes.
(cherry picked from commit bc349045b1be8fb3af2b02d8554483869e54d5b8)
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0fe87761
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2018-08-09T10:57:06
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smart_pkt: adjust style of "ref" packet parsing function
While the function parsing ref packets doesn't have any immediately
obvious buffer overflows, it's style is different to all the other
parsing functions. Instead of checking buffer length while we go, it
does a check up-front. This causes the code to seem a lot more magical
than it really is due to some magic constants. Refactor the function to
instead make use of the style of other packet parser and verify buffer
lengths as we go.
(cherry picked from commit 5edcf5d190f3b379740b223ff6a649d08fa49581)
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97156614
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2018-08-09T10:46:58
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smart_pkt: check whether error packets are prefixed with "ERR "
In the `git_pkt_parse_line` function, we determine what kind of packet
a given packet line contains by simply checking for the prefix of that
line. Except for "ERR" packets, we always only check for the immediate
identifier without the trailing space (e.g. we check for an "ACK"
prefix, not for "ACK "). But for "ERR" packets, we do in fact include
the trailing space in our check. This is not really much of a problem at
all, but it is inconsistent with all the other packet types and thus
causes confusion when the `err_pkt` function just immediately skips the
space without checking whether it overflows the line buffer.
Adjust the check in `git_pkt_parse_line` to not include the trailing
space and instead move it into `err_pkt` for consistency.
(cherry picked from commit 786426ea6ec2a76ffe2515dc5182705fb3d44603)
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5c0d1100
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2018-08-09T10:46:26
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smart_pkt: explicitly avoid integer overflows when parsing packets
When parsing data, progress or error packets, we need to copy the
contents of the rest of the current packet line into the flex-array of
the parsed packet. To keep track of this array's length, we then assign
the remaining length of the packet line to the structure. We do have a
mismatch of types here, as the structure's `len` field is a signed
integer, while the length that we are assigning has type `size_t`.
On nearly all platforms, this shouldn't pose any problems at all. The
line length can at most be 16^4, as the line's length is being encoded
by exactly four hex digits. But on a platforms with 16 bit integers,
this assignment could cause an overflow. While such platforms will
probably only exist in the embedded ecosystem, we still want to avoid
this potential overflow. Thus, we now simply change the structure's
`len` member to be of type `size_t` to avoid any integer promotion.
(cherry picked from commit 40fd84cca68db24f325e460a40dabe805e7a5d35)
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20e58aac
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2018-08-09T10:36:44
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smart_pkt: honor line length when determining packet type
When we parse the packet type of an incoming packet line, we do not
verify that we don't overflow the provided line buffer. Fix this by
using `git__prefixncmp` instead and passing in `len`. As we have
previously already verified that `len <= linelen`, we thus won't ever
overflow the provided buffer length.
(cherry picked from commit 4a5804c983317100eed509537edc32d69c8d7aa2)
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bd069448
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2018-10-03T15:39:40
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tests: verify parsing logic for smart packets
The commits following this commit are about to introduce quite a lot of
refactoring and tightening of the smart packet parser. Unfortunately, we
do not yet have any tests despite our online tests that verify that our
parser does not regress upon changes. This is doubly unfortunate as our
online tests aren't executed by default.
Add new tests that exercise the smart parsing logic directly by
executing `git_pkt_parse_line`.
(cherry picked from commit 365d2720c1a5fc89f03fd85265c8b45195c7e4a8)
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003cbc3f
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2018-06-24T19:47:08
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Verify ref_pkt's are long enough
If the remote sends a too-short packet, we'll allow `len` to go
negative and eventually issue a malloc for <= 0 bytes on
```
pkt->head.name = git__malloc(alloclen);
```
(cherry picked from commit 437ee5a70711ac2e027877d71ee4ae17e5ec3d6c)
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4385aef3
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2017-08-22T16:29:07
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smart: typedef git_pkt_type and clarify recv_pkt return type
(cherry picked from commit 08961c9d0d6927bfcc725bd64c9a87dbcca0c52c)
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21ffc57d
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2018-06-28T05:27:36
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Small style tweak, and set an error
(cherry picked from commit 895a668e19dc596e7b12ea27724ceb7b68556106)
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be98c9e9
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2018-06-26T02:32:50
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Remove GIT_PKT_PACK entirely
(cherry picked from commit 90cf86070046fcffd5306915b57786da054d8964)
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bf4342f7
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2018-08-11T13:06:14
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Fix 'invalid packet line' for ng packets containing errors
(cherry picked from commit 50dd7fea5ad1bf6c013b72ad0aa803a9c84cdede)
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15e92284
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2018-09-05T11:49:13
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Prevent heap-buffer-overflow
When running repack while doing repo writes, `packfile_load__cb()` can see some temporary files in the directory that are bigger than the usual, and makes `memcmp` overflow on the `p->pack_name` string. ASAN detected this. This just uses `strncmp`, that should not have any performance impact and is safe for comparing strings of different sizes.
```
ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61200001a3f3 at pc 0x7f4a9e1976ec bp 0x7ffc1f80e100 sp 0x7ffc1f80d8b0
READ of size 89 at 0x61200001a3f3 thread T0
SCARINESS: 26 (multi-byte-read-heap-buffer-overflow)
#0 0x7f4a9e1976eb in __interceptor_memcmp.part.78 (/build/cfgr-admin#link-tree/libtools_build_sanitizers_asan-ubsan-py.so+0xcf6eb)
#1 0x7f4a518c5431 in packfile_load__cb /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb_pack.c:213
#2 0x7f4a518d9582 in git_path_direach /build/libgit2/0.27.0/src/libgit2-0.27.0/src/path.c:1134
#3 0x7f4a518c58ad in pack_backend__refresh /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb_pack.c:347
#4 0x7f4a518c1b12 in git_odb_refresh /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:1511
#5 0x7f4a518bff5f in git_odb__freshen /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:752
#6 0x7f4a518c17d4 in git_odb_stream_finalize_write /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:1415
#7 0x7f4a51b9d015 in Repository_write /build/pygit2/0.27.0/src/pygit2-0.27.0/src/repository.c:509
```
(cherry picked from commit d22cd1f4a4c10ff47b04c57560e6765d77e5a8fd)
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39706ded
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2018-09-03T10:49:46
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config_parse: refactor error handling when parsing multiline variables
The current error handling for the multiline variable parser is a bit
fragile, as each error condition has its own code to clear memory.
Instead, unify error handling as far as possible to avoid this
repetitive code. While at it, make use of `GITERR_CHECK_ALLOC` to
correctly handle OOM situations and verify that the buffer we print into
does not run out of memory either.
(cherry picked from commit bc63e1ef521ab5900dc0b0dcd578b8bf18627fb1)
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68823395
|
2018-09-01T03:50:26
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config: Fix a leak parsing multi-line config entries
(cherry picked from commit 38b852558eb518f96c313cdcd9ce5a7af6ded194)
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24c7b23d
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2018-08-25T17:04:39
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config: convert unbounded recursion into a loop
(cherry picked from commit a03113e80332fba6c77f43b21d398caad50b4b89)
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8b89f362
|
2018-08-06T10:49:49
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|
Merge pull request #4756 from pks-t/pks/v0.27.4
Release v0.27.4
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1f9a8510
|
2018-07-19T13:00:42
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|
smart_pkt: fix potential OOB-read when processing ng packet
OSS-fuzz has reported a potential out-of-bounds read when processing a
"ng" smart packet:
==1==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6310000249c0 at pc 0x000000493a92 bp 0x7ffddc882cd0 sp 0x7ffddc882480
READ of size 65529 at 0x6310000249c0 thread T0
SCARINESS: 26 (multi-byte-read-heap-buffer-overflow)
#0 0x493a91 in __interceptor_strchr.part.35 /src/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:673
#1 0x813960 in ng_pkt libgit2/src/transports/smart_pkt.c:320:14
#2 0x810f79 in git_pkt_parse_line libgit2/src/transports/smart_pkt.c:478:9
#3 0x82c3c9 in git_smart__store_refs libgit2/src/transports/smart_protocol.c:47:12
#4 0x6373a2 in git_smart__connect libgit2/src/transports/smart.c:251:15
#5 0x57688f in git_remote_connect libgit2/src/remote.c:708:15
#6 0x52e59b in LLVMFuzzerTestOneInput /src/download_refs_fuzzer.cc:145:9
#7 0x52ef3f in ExecuteFilesOnyByOne(int, char**) /src/libfuzzer/afl/afl_driver.cpp:301:5
#8 0x52f4ee in main /src/libfuzzer/afl/afl_driver.cpp:339:12
#9 0x7f6c910db82f in __libc_start_main /build/glibc-Cl5G7W/glibc-2.23/csu/libc-start.c:291
#10 0x41d518 in _start
When parsing an "ng" packet, we keep track of both the current position
as well as the remaining length of the packet itself. But instead of
taking care not to exceed the length, we pass the current pointer's
position to `strchr`, which will search for a certain character until
hitting NUL. It is thus possible to create a crafted packet which
doesn't contain a NUL byte to trigger an out-of-bounds read.
Fix the issue by instead using `memchr`, passing the remaining length as
restriction. Furthermore, verify that we actually have enough bytes left
to produce a match at all.
OSS-Fuzz-Issue: 9406
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faa7650b
|
2018-08-06T08:46:49
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|
travis: force usage of Xcode 8.3 image
Travis has upgraded the default Xcode images from 8.3 to 9.4 on 31st
July 2018, including an upgrade to macOS 10.13. Unfortunately, this
breaks our CI builds on our maintenance branches. As we do not want to
include mayor changes to fix the integration right now, we force use of
the old Xcode 8.3 images.
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c5dd0ea1
|
2018-08-03T11:24:31
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version: bump to v0.27.4
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be0edb43
|
2018-08-03T11:24:14
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CHANGELOG.md: document security release v0.27.4
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504bd54a
|
2018-07-09T13:26:21
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|
Merge pull request #4717 from pks-t/pks/v0.27.3
Release v0.27.3
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8fbd7563
|
2018-07-05T14:34:24
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version: bump to v0.27.3
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36f07807
|
2018-07-05T14:20:57
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|
CHANGELOG: add release notes for v0.27.3
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c1577110
|
2018-07-05T13:30:46
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|
delta: fix overflow when computing limit
When checking whether a delta base offset and length fit into the base
we have in memory already, we can trigger an overflow which breaks the
check. This would subsequently result in us reading memory from out of
bounds of the base.
The issue is easily fixed by checking for overflow when adding `off` and
`len`, thus guaranteeting that we are never indexing beyond `base_len`.
This corresponds to the git patch 8960844a7 (check patch_delta bounds
more carefully, 2006-04-07), which adds these overflow checks.
Reported-by: Riccardo Schirone <rschiron@redhat.com>
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9844d38b
|
2018-06-29T09:11:02
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|
delta: fix out-of-bounds read of delta
When computing the offset and length of the delta base, we repeatedly
increment the `delta` pointer without checking whether we have advanced
past its end already, which can thus result in an out-of-bounds read.
Fix this by repeatedly checking whether we have reached the end. Add a
test which would cause Valgrind to produce an error.
Reported-by: Riccardo Schirone <rschiron@redhat.com>
Test-provided-by: Riccardo Schirone <rschiron@redhat.com>
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3f461902
|
2018-06-29T07:45:18
|
|
delta: fix sign-extension of big left-shift
Our delta code was originally adapted from JGit, which itself adapted it
from git itself. Due to this heritage, we inherited a bug from git.git
in how we compute the delta offset, which was fixed upstream in
48fb7deb5 (Fix big left-shifts of unsigned char, 2009-06-17). As
explained by Linus:
Shifting 'unsigned char' or 'unsigned short' left can result in sign
extension errors, since the C integer promotion rules means that the
unsigned char/short will get implicitly promoted to a signed 'int' due to
the shift (or due to other operations).
This normally doesn't matter, but if you shift things up sufficiently, it
will now set the sign bit in 'int', and a subsequent cast to a bigger type
(eg 'long' or 'unsigned long') will now sign-extend the value despite the
original expression being unsigned.
One example of this would be something like
unsigned long size;
unsigned char c;
size += c << 24;
where despite all the variables being unsigned, 'c << 24' ends up being a
signed entity, and will get sign-extended when then doing the addition in
an 'unsigned long' type.
Since git uses 'unsigned char' pointers extensively, we actually have this
bug in a couple of places.
In our delta code, we inherited such a bogus shift when computing the
offset at which the delta base is to be found. Due to the sign extension
we can end up with an offset where all the bits are set. This can allow
an arbitrary memory read, as the addition in `base_len < off + len` can
now overflow if `off` has all its bits set.
Fix the issue by casting the result of `*delta++ << 24UL` to an unsigned
integer again. Add a test with a crafted delta that would actually
succeed with an out-of-bounds read in case where the cast wouldn't
exist.
Reported-by: Riccardo Schirone <rschiron@redhat.com>
Test-provided-by: Riccardo Schirone <rschiron@redhat.com>
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8d36dc62
|
2018-06-10T18:06:38
|
|
Merge pull request #4632 from pks-t/pks/v0.27.1
Bugfix release v0.27.2
|
|
|
853ef86a
|
2018-05-30T08:15:30
|
|
version: bump soversion to v0.27.2
|
|
|
0818adec
|
2018-04-20T11:29:27
|
|
CHANGELOG.md: update for release v0.27.2
|
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|
35865117
|
2018-06-06T09:23:01
|
|
tests: submodule: do not rely on config iteration order
The test submodule::lookup::duplicated_path, which tries to verify that
we detect submodules with duplicated paths, currently relies on the
gitmodules file of "submod2_target". While this file has two gitmodules
with the same path, one of these gitmodules has an empty name and thus
does not pass `git_submodule_name_is_valid`. Because of this, the test
is in fact dependent on the iteration order in which we process the
submodules. In fact the "valid" submodule comes first, the "invalid"
submodule will cause the desired error. In fact the "invalid" submodule
comes first, it will be skipped due to its name being invalid, and we
will not see the desired error. While this works on the master branch
just right due to the refactoring of our config code, where iteration
order is now deterministic, this breaks on all older maintenance
branches.
Fix the issue by simply using `cl_git_rewritefile` to rewrite the
gitmodules file. This greatly simplifies the test and also makes the
intentions of it much clearer.
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7392799d
|
2018-05-30T08:35:06
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|
submodule: detect duplicated submodule paths
When loading submodule names, we build a map of submodule paths and
their respective names. While looping over the configuration keys,
we do not check though whether a submodule path was seen already. This
leads to a memory leak in case we have multiple submodules with the same
path, as we just overwrite the old value in the map in that case.
Fix the error by verifying that the path to be added is not yet part of
the string map. Git does not allow to have multiple submodules for a
path anyway, so we now do the same and detect this duplication,
reporting it to the user.
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f2e5c092
|
2018-04-27T15:31:43
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|
cmake: remove now-useless LIBGIT2_LIBDIRS handling
With the recent change of always resolving pkg-config libraries to their
full path, we do not have to manage the LIBGIT2_LIBDIRS variable
anymore. The only other remaining user of LIBGIT2_LIBDIRS is winhttp,
which is a CMake-style library target and can thus be resolved by CMake
automatically.
Remove the variable to simplify our build system a bit.
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0c8ff50f
|
2018-04-27T10:38:49
|
|
cmake: resolve libraries found by pkg-config
Libraries found by CMake modules are usually handled with their full
path. This makes linking against those libraries a lot more robust when
it comes to libraries in non-standard locations, as otherwise we might
mix up libraries from different locations when link directories are
given.
One excemption are libraries found by PKG_CHECK_MODULES. Instead of
returning libraries with their complete path, it will return the
variable names as well as a set of link directories. In case where
multiple sets of the same library are installed in different locations,
this can lead the compiler to link against the wrong libraries in the
end, when link directories of other dependencies are added.
To fix this shortcoming, we need to manually resolve library paths
returned by CMake against their respective library directories. This is
an easy task to do with `FIND_LIBRARY`.
|
|
|
b2f3ff56
|
2018-04-19T01:08:18
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|
worktree: fix calloc of the wrong object type
|
|
|
8fa0b34b
|
2018-04-19T01:05:05
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|
local: fix a leaking reference when iterating over a symref
Valgrind log :
==17702== 18 bytes in 1 blocks are indirectly lost in loss record 69 of 1,123
==17702== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17702== by 0x5FDBB49: strdup (strdup.c:42)
==17702== by 0x632B3E: git__strdup (util.h:106)
==17702== by 0x632D2C: git_reference__alloc_symbolic (refs.c:64)
==17702== by 0x62E0AF: loose_lookup (refdb_fs.c:408)
==17702== by 0x62E636: refdb_fs_backend__iterator_next (refdb_fs.c:565)
==17702== by 0x62CD8E: git_refdb_iterator_next (refdb.c:147)
==17702== by 0x6347F2: git_reference_next (refs.c:838)
==17702== by 0x6345CB: git_reference_foreach (refs.c:748)
==17702== by 0x66BE62: local_download_pack (local.c:579)
==17702== by 0x5DB48F: git_fetch_download_pack (fetch.c:148)
==17702== by 0x639028: git_remote_download (remote.c:932)
==17702== by 0x63919A: git_remote_fetch (remote.c:969)
==17702== by 0x4ABEDD: test_fetchhead_nonetwork__fetch_into_repo_with_symrefs (nonetwork.c:362)
==17702== by 0x4125D9: clar_run_test (clar.c:222)
==17702== by 0x41287C: clar_run_suite (clar.c:286)
==17702== by 0x412DDE: clar_test_run (clar.c:433)
==17702== by 0x4105E1: main (main.c:24)
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2fe887e6
|
2018-04-18T20:57:16
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|
remote: repo is optional here
As per CID:1378747, we might be called with a NULL repo, which would be deferenced in write_add_refspec
|
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96329606
|
2018-03-11T15:35:56
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|
worktree: Read worktree specific reflog for HEAD
Signed-off-by: Sven Strickroth <email@cs-ware.de>
|
|
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a137cdbd
|
2018-04-18T21:41:44
|
|
refspec: check for valid parameters in git_refspec__dwim_one
CID:1383993, "In git_refspec__dwim_one: All paths that lead to this null pointer comparison already dereference the pointer earlier (CWE-476)"
|
|
|
dad64987
|
2018-04-03T12:31:35
|
|
appveyor: fix typo in registry key to disable DHE
Commit 723e1e976 (appveyor: disable DHE to avoid spurious failures,
2018-03-29) added a workaround to fix spurious test failures due to a
bug in Windows' SChannel implementation. The workaround only worked by
accident, though, as the registry key was in fact mistyped. Fix the
typo.
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|
|
1cc6cc99
|
2018-03-29T13:35:27
|
|
appveyor: disable DHE to avoid spurious failures
Our CI builds have intermittent failures in our online tests, e.g. with
the message "A provided buffer was too small". This is not a programming
error in libgit2 but rather an error in the SChannel component of
Windows. Under certain circumstances involving Diffie-Hellman key
exchange, SChannel is unable to correctly handle input from the server.
This bug has already been fixed in recent patches for Windows 10 and
Windows Server 2016, but they are not yet available for AppVeyor.
Manually pamper over that issue by disabling all ciphersuites using DHE
via the registry. While this disables more ciphers than necessary, we
really don't care for that at all but just want to avoid build failures
due to that bug.
See [1], [2] or [3] for additional information.
1: https://github.com/aws/aws-sdk-cpp/issues/671
2: https://github.com/dotnet/corefx/issues/7812
3: https://support.microsoft.com/en-us/help/2992611/ms14-066-vulnerability-in-schannel-could-allow-remote-code-execution-n
|
|
|
7fa6c8ce
|
2018-03-29T10:18:51
|
|
util: fix missing headers for MinGW environments
There are multiple references to undefined functions in the Microsoft
builds. Add headers to make them known.
|
|
0f09d9f5
|
2018-04-02T20:00:07
|
|
Fix build with LibreSSL 2.7
LibreSSL 2.7 adds OpenSSL 1.1 API
Signed-off-by: Bernard Spil <brnrd@FreeBSD.org>
|
|
2569056d
|
2018-04-04T21:29:03
|
|
typo: Fixed a trivial typo in test function.
|
|
|
16b62dd4
|
2018-04-04T21:28:31
|
|
diff: Add missing GIT_DELTA_TYPECHANGE -> 'T' mapping.
This adds the 'T' status character to git_diff_status_char() for diff
entries that change type.
|
|
|
07011e60
|
2018-04-12T13:32:27
|
|
revwalk: fix uninteresting revs sometimes not limiting graphwalk
When we want to limit our graphwalk, we use the heuristic of checking
whether the newest limiting (uninteresting) revision is newer than the
oldest interesting revision. We do so by inspecting whether the first
item's commit time of the user-supplied list of revisions is newer than
the last added interesting revision. This is wrong though, as the user
supplied list is in no way guaranteed to be sorted by increasing commit
dates. This could lead us to abort the revwalk early before applying all
relevant limiting revisions, outputting revisions which should in fact
have been hidden.
Fix the heuristic by instead checking whether _any_ of the limiting
commits was made earlier than the last interesting commit. Add a test.
|
|
|
0f88adb6
|
2018-02-08T12:36:47
|
|
Submodule API should report .gitmodules parse errors
Signed-off-by: Sven Strickroth <email@cs-ware.de>
|
|
|
a714e836
|
2018-04-06T10:39:16
|
|
transports: local: fix assert when fetching into repo with symrefs
When fetching into a repository which has symbolic references via the
"local" transport we run into an assert. The assert is being triggered
while we negotiate the packfile between the two repositories. When
hiding known revisions from the packbuilder revwalk, we unconditionally
hide all references of the local refdb. In case one of these references
is a symbolic reference, though, this means we're trying to hide a
`NULL` OID, which triggers the assert.
Fix the issue by only hiding OID references from the revwalk. Add a test
to catch this issue in the future.
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|
|
59012bf4
|
2018-03-29T09:15:48
|
|
odb: mempack: fix leaking objects when freeing mempacks
When a ODB mempack gets free'd, we take no measures at all to free its
contents, most notably the objects added to the database, resulting in a
memory leak. Call `git_mempack_reset` previous to freeing the ODB
structures themselves, which takes care of releasing all associated
data structures.
|
|
4d4a7dbf
|
2018-03-28T17:37:39
|
|
sha1dc: update to fix errors with endianess
This updates the version of SHA1DC to c3e1304ea3.
|
|
|
b89988c7
|
2018-03-27T15:03:15
|
|
transports: ssh: replace deprecated function `libssh2_session_startup`
The function `libssh2_session_startup` has been deprecated since libssh2
version 1.2.8 in favor of `libssh2_session_handshake` introduced in the
same version. libssh2 1.2.8 was released in April 2011, so it is already
seven years old. It is available in Debian Wheezy, Ubuntu Trusty and
CentOS 7.4, so the most important and conservative distros already have
it available. As such, it seems safe to just use the new function.
|
|
|
b2e7d8c2
|
2018-03-27T14:49:21
|
|
transports: ssh: disconnect session before freeing it
The function `ssh_stream_free` takes over the responsibility of closing
channels and streams just before freeing their memory, but it does not
do so for the session. In fact, we never disconnect the session
ourselves at all, as libssh2 will not do so itself upon freeing the
structure. Quoting the documentation of `libssh2_session_free`:
> Frees all resources associated with a session instance. Typically
> called after libssh2_session_disconnect_ex,
The missing disconnect probably stems from a misunderstanding what it
actually does. As we are already closing the TCP socket ourselves, the
assumption was that no additional disconnect is required. But calling
`libssh2_session_disconnect` will notify the server that we are cleanly
closing the connection, such that the server can free his own resources.
Add a call to `libssh2_session_disconnect` to fix that issue.
[1]: https://www.libssh2.org/libssh2_session_free.html
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|
|
b6623be0
|
2018-04-10T23:49:44
|
|
tests: ensure worktrees' head have owners too
|
|
|
e2a80124
|
2018-04-10T21:16:43
|
|
refs: preserve the owning refdb when duping reference
This fixes a segfault in git_reference_owner on references returned from git_reference__read_head and git_reference_dup ones.
|
|
e9ee7bd0
|
2018-04-19T15:21:52
|
|
fixed stack smashing due to wrong size of struct stat on the stack
on 32-bit systems with 64-bit file descriptor offsets enabled
(added -D_FILE_OFFSET_BITS=64 when compiling the test suite)
|
|
|
b260fdc8
|
2018-04-06T12:24:10
|
|
attr_file: fix handling of directory patterns with trailing spaces
When comparing whether a path matches a directory rule, we pass the
both the path and directory name to `fnmatch` with
`GIT_ATTR_FNMATCH_DIRECTORY` being set. `fnmatch` expects the pattern to
contain no trailing directory '/', which is why we try to always strip
patterns of trailing slashes. We do not handle that case correctly
though when the pattern itself has trailing spaces, causing the match to
fail.
Fix the issue by stripping trailing spaces and tabs for a rule previous
to checking whether the pattern is a directory pattern with a trailing
'/'. This replaces the whitespace-stripping in our ignore file parsing
code, which was stripping whitespaces too late. Add a test to catch
future breakage.
|
|
b0d9952c
|
2018-05-29T19:06:45
|
|
Merge pull request #4659 from libgit2/ethomson/submodule-0_27
Backport fixes for CVE 2018-11235
|
|
|
f9ade314
|
2018-05-29T19:03:37
|
|
CHANGELOG: mention CVE-2018-11235 is covered by v0.27.1
|
|
|
df53ce32
|
2018-05-29T14:05:33
|
|
version: bump library version to 0.27.1
|
|
|
78daf00b
|
2018-05-29T14:05:10
|
|
CHANGELOG: update for v0.27.1
|
|
|
ed95962b
|
2018-05-24T21:58:40
|
|
path: hand-code the zero-width joiner as UTF-8
|
|
|
cfed1be8
|
2018-05-24T20:28:36
|
|
submodule: plug leaks from the escape detection
|
|
|
f650153a
|
2018-05-24T19:05:59
|
|
submodule: replace index with strchr which exists on Windows
|
|
|
a3df20cf
|
2018-05-24T19:00:13
|
|
submodule: the repostiory for _name_is_valid should not be const
We might modify caches due to us trying to load the configuration to figure out
what kinds of filesystem protections we should have.
|
|
|
a9e60994
|
2018-05-23T08:40:17
|
|
path: check for a symlinked .gitmodules in fs-agnostic code
We still compare case-insensitively to protect more thoroughly as we don't know
what specifics we'll see on the system and it's the behaviour from git.
|
|
|
be20626a
|
2018-05-22T20:37:23
|
|
checkout: change symlinked .gitmodules file test to expect failure
When dealing with `core.proectNTFS` and `core.protectHFS` we do check
against `.gitmodules` but we still have a failing test as the non-filesystem
codepath does not check for it.
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|
|
aa003557
|
2018-05-22T16:13:47
|
|
path: reject .gitmodules as a symlink
Any part of the library which asks the question can pass in the mode to have it
checked against `.gitmodules` being a symlink.
This is particularly relevant for adding entries to the index from the worktree
and for checking out files.
|
|
|
08d4b459
|
2018-05-22T15:48:38
|
|
index: stat before creating the entry
This is so we have it available for the path validity checking. In a later
commit we will start rejecting `.gitmodules` files as symlinks.
|
|
|
c7cac088
|
2018-05-22T15:21:08
|
|
path: accept the name length as a parameter
We may take in names from the middle of a string so we want the caller to let us
know how long the path component is that we should be checking.
|
|
|
ed357be1
|
2018-05-22T14:16:45
|
|
checkout: add a failing test for refusing a symlinked .gitmodules
We want to reject these as they cause compatibility issues and can lead to git
writing to files outside of the repository.
|
|
|
d7ee21ee
|
2018-05-22T13:58:24
|
|
path: expose dotgit detection functions per filesystem
These will be used by the checkout code to detect them for the particular
filesystem they're on.
|
|
f907a6f5
|
2018-05-18T15:16:53
|
|
path: hide the dotgit file functions
These can't go into the public API yet as we don't want to introduce API or ABI
changes in a security release.
|
|
|
0cc14627
|
2018-05-16T15:56:04
|
|
path: add functions to detect .gitconfig and .gitattributes
|
|
|
26b3cec0
|
2018-05-16T15:42:08
|
|
path: add a function to detect an .gitmodules file
Given a path component it knows what to pass to the filesystem-specific
functions so we're protected even from trees which try to use the 8.3 naming
rules to get around us matching on the filename exactly.
The logic and test strings come from the equivalent git change.
|
|
|
dd364dde
|
2018-05-16T14:47:04
|
|
path: provide a generic function for checking dogit files on NTFS
It checks against the 8.3 shortname variants, including the one which includes
the checksum as part of its name.
|
|
|
37dc60b6
|
2018-05-16T11:56:04
|
|
path: provide a generic dogit checking function for HFS
This lets us check for other kinds of reserved files.
|
|
|
916af8ea
|
2018-05-14T16:03:15
|
|
submodule: also validate Windows-separated paths for validity
Otherwise we would also admit `..\..\foo\bar` as a valid path and fail to
protect Windows users.
Ideally we would check for both separators without the need for the copied
string, but this'll get us over the RCE.
|
|
|
e6c757a7
|
2018-04-30T13:47:15
|
|
submodule: ignore submodules which include path traversal in their name
If the we decide that the "name" of the submodule (i.e. its path inside
`.git/modules/`) is trying to escape that directory or otherwise trick us, we
ignore the configuration for that submodule.
This leaves us with a half-configured submodule when looking it up by path, but
it's the same result as if the configuration really were missing.
The name check is potentially more strict than it needs to be, but it lets us
re-use the check we're doing for the checkout. The function that encapsulates
this logic is ready to be exported but we don't want to do that in a security
release so it remains internal for now.
|
|
|
6442f1f1
|
2018-04-30T13:03:44
|
|
submodule: add a failing test for a submodule escaping .git/modules
We should pretend such submdules do not exist as it can lead to RCE.
|
|
|
6311e886
|
2018-03-23T07:38:34
|
|
Merge pull request #4594 from pks-t/pks/mempack-assert
odb: fix writing to fake write streams
|
|
|
a52b4c51
|
2018-03-23T09:59:46
|
|
odb: fix writing to fake write streams
In commit 7ec7aa4a7 (odb: assert on logic errors when writing objects,
2018-02-01), the check for whether we are trying to overflowing the fake
stream buffer was changed from returning an error to raising an assert.
The conversion forgot though that the logic around `assert`s are
basically inverted. Previously, if the statement
stream->written + len > steram->size
evaluated to true, we would return a `-1`. Now we are asserting that
this statement is true, and in case it is not we will raise an error. So
the conversion to the `assert` in fact changed the behaviour to the
complete opposite intention.
Fix the assert by inverting its condition again and add a regression
test.
|
|
|
904307af
|
2018-03-23T09:58:57
|
|
tests: add tests for the mempack ODB backend
Our mempack ODB backend has no test coverage at all right now. Add a
simple test suite to at least have some coverage of the most basic
operations on the ODB.
|
|
|
72e60347
|
2018-03-20T23:16:36
|
|
Merge pull request #4588 from libgit2/ethomson/bitbucket
online tests: update auth for bitbucket test
|
|
|
54bf4d14
|
2018-03-20T07:47:27
|
|
online tests: update auth for bitbucket test
Update the settings to use a specific read-only token for accessing our
test repositories in Bitbucket.
|
|
|
5585e358
|
2018-03-20T00:59:21
|
|
Merge pull request #4563 from libgit2/ethomson/ssh-unescape
Refactor `gitno_extract_url_parts`
|
|
|
9108959a
|
2018-03-14T15:03:35
|
|
buf: add tests for percent decoding
|
|
|
0e4f3d9d
|
2018-03-03T21:47:22
|
|
gitno_extract_url_parts: decode hostnames
RFC 3986 says that hostnames can be percent encoded. Percent decode
hostnames in our URLs.
|
|
|
05551ca0
|
2018-03-03T20:14:54
|
|
Remove now unnecessary `gitno_unescape`
|