|
36f07807
|
2018-07-05T14:20:57
|
|
CHANGELOG: add release notes for v0.27.3
|
|
|
c1577110
|
2018-07-05T13:30:46
|
|
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>
|
|
|
9844d38b
|
2018-06-29T09:11:02
|
|
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>
|
|
|
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>
|
|
|
8d36dc62
|
2018-06-10T18:06:38
|
|
Merge pull request #4632 from pks-t/pks/v0.27.1
Bugfix release v0.27.2
|
|
|
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.
|
|
|
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
|
|
|
7392799d
|
2018-05-30T08:35:06
|
|
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.
|
|
|
f2e5c092
|
2018-04-27T15:31:43
|
|
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.
|
|
|
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`.
|
|
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.
|
|
|
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.
|
|
|
b2f3ff56
|
2018-04-19T01:08:18
|
|
worktree: fix calloc of the wrong object type
|
|
0f88adb6
|
2018-02-08T12:36:47
|
|
Submodule API should report .gitmodules parse errors
Signed-off-by: Sven Strickroth <email@cs-ware.de>
|
|
|
8fa0b34b
|
2018-04-19T01:05:05
|
|
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)
|
|
|
2fe887e6
|
2018-04-18T20:57:16
|
|
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
|
|
|
96329606
|
2018-03-11T15:35:56
|
|
worktree: Read worktree specific reflog for HEAD
Signed-off-by: Sven Strickroth <email@cs-ware.de>
|
|
|
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
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
|
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.
|
|
|
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`
|
|
|
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`
|
|
|
60e7848e
|
2018-03-03T20:13:30
|
|
gitno_extract_url_parts: use `git_buf`s
Now that we can decode percent-encoded strings as part of `git_buf`s,
use that decoder in `gitno_extract_url_parts`.
|
|
|
6f577906
|
2018-03-03T20:09:09
|
|
ssh urls: use `git_buf_decode_percent`
Use `git_buf_decode_percent` so that we can avoid allocating a temporary
buffer.
|
|
|
8070a357
|
2018-03-03T18:47:35
|
|
Introduce `git_buf_decode_percent`
Introduce a function to take a percent-encoded string (URI encoded,
described by RFC 1738) and decode it into a `git_buf`.
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30333e82
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2018-02-28T13:00:04
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Update tests
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16210877
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2018-02-28T12:59:47
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Unescape repo before constructing ssh request
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8a2cdbd3
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2018-02-28T12:58:58
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Rename unescape and make non-static
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9108959a
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2018-03-14T15:03:35
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buf: add tests for percent decoding
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31985775
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2018-03-19T23:07:44
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Merge pull request #4584 from libgit2/ethomson/bitbucket
online::clone: skip creds fallback test
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03c58778
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2018-03-19T09:20:35
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online::clone: skip creds fallback test
At present, we have three online tests against bitbucket: one which
specifies the credentials in the payload, one which specifies the
correct credentials in the URL and a final one that specifies the
incorrect credentials in the URL. Bitbucket has begun responding to the
latter test with a 403, which causes us to fail.
Break these three tests into separate tests so that we can skip the
latter until this is resolved on Bitbucket's end or until we can change
the test to a different provider.
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937e7e26
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2018-03-13T13:04:38
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Merge pull request #4544 from josharian/docs
pathspec: improve git_pathspec_flag_t doc rendering
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7b66bfe2
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2018-03-12T10:09:49
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Merge pull request #4575 from pks-t/pks/index-secfixes-master
Index parsing fixes
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358cc2e2
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2018-03-12T09:50:00
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Merge pull request #4396 from libgit2/cmn/config-regex-is-normalised
config: specify how we match the regular expressions
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2f89bd90
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2018-03-11T12:36:13
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config: explicitly state that subsections are case-sensitive
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3db1af1f
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2018-03-08T12:36:46
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index: error out on unreasonable prefix-compressed path lengths
When computing the complete path length from the encoded
prefix-compressed path, we end up just allocating the complete path
without ever checking what the encoded path length actually is. This can
easily lead to a denial of service by just encoding an unreasonable long
path name inside of the index. Git already enforces a maximum path
length of 4096 bytes. As we also have that enforcement ready in some
places, just make sure that the resulting path is smaller than
GIT_PATH_MAX.
Reported-by: Krishna Ram Prakash R <krp@gtux.in>
Reported-by: Vivek Parikh <viv0411.parikh@gmail.com>
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3207ddb0
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2018-03-08T12:00:27
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index: fix out-of-bounds read with invalid index entry prefix length
The index format in version 4 has prefix-compressed entries, where every
index entry can compress its path by using a path prefix of the previous
entry. Since implmenting support for this index format version in commit
5625d86b9 (index: support index v4, 2016-05-17), though, we do not
correctly verify that the prefix length that we want to reuse is
actually smaller or equal to the amount of characters than the length of
the previous index entry's path. This can lead to a an integer underflow
and subsequently to an out-of-bounds read.
Fix this by verifying that the prefix is actually smaller than the
previous entry's path length.
Reported-by: Krishna Ram Prakash R <krp@gtux.in>
Reported-by: Vivek Parikh <viv0411.parikh@gmail.com>
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58a6fe94
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2018-03-08T11:49:19
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index: convert `read_entry` to return entry size via an out-param
The function `read_entry` does not conform to our usual coding style of
returning stuff via the out parameter and to use the return value for
reporting errors. Due to most of our code conforming to that pattern, it
has become quite natural for us to actually return `-1` in case there is
any error, which has also slipped in with commit 5625d86b9 (index:
support index v4, 2016-05-17). As the function returns an `size_t` only,
though, the return value is wrapped around, causing the caller of
`read_tree` to continue with an invalid index entry. Ultimately, this
can lead to a double-free.
Improve code and fix the bug by converting the function to return the
index entry size via an out parameter and only using the return value to
indicate errors.
Reported-by: Krishna Ram Prakash R <krp@gtux.in>
Reported-by: Vivek Parikh <viv0411.parikh@gmail.com>
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d11c4a1a
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2018-03-08T13:13:04
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Merge pull request #4571 from jacquesg/overflow
Integer overflow
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e666495b
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2018-03-08T08:31:49
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cmake: enable shift count overflow warning
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5f6383ca
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2018-03-08T08:17:29
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diff: ensure an unsigned number is shifted
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515683c7
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2018-03-07T12:39:28
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Merge pull request #4567 from pks-t/pks/zlib-update
deps: upgrade embedded zlib to version 1.2.11
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4c5330cb
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2018-03-07T10:33:41
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deps: upgrade embedded zlib to version 1.2.11
The current version of zlib bundled with libgit2 is version 1.2.8. This
version has several CVEs assigned:
- CVE-2016-9843
- CVE-2016-9841
- CVE-2016-9842
- CVE-2016-9840
Upgrade the bundled version to the current release 1.2.11, which has
these vulnerabilities fixes.
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2d2a6025
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2018-03-04T12:17:17
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Merge pull request #4541 from libgit2/cmn/odb-streaming-read-changelog
CHANGELOG: mention the change to `git_odb_open_rstream`
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adf7d094
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2018-03-04T12:17:06
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Merge pull request #4559 from jacquesg/worktree-const
Worktree lock reason should be const
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53e692af
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2018-03-02T12:49:54
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worktree: rename parameter creason to reason
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12356076
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2018-03-02T12:41:04
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worktree: lock reason should be const
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8353e4b5
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2018-02-22T09:20:31
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CHANGELOG: mention the change to `git_odb_open_rstream`
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8a8ea1db
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2018-02-28T18:14:52
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Merge pull request #4552 from libgit2/cmn/config-header-common
Cast less blindly between configuration objects
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e8e490b2
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2018-02-28T17:01:47
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Merge pull request #4554 from pks-t/pks/curl-init
curl: initialize and cleanup global curl state
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9cd0c6f1
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2018-02-28T16:01:16
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config: return an error if config_refresh is called on a snapshot
Instead of treating it as a no-op, treat it as a programming error and return
the same kind of error as if you called to set or delete variables on a
snapshot.
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17bef3b8
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2018-02-28T15:01:43
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Merge pull request #4553 from libgit2/cmn/tree-write-initialise
tree: initialize the id we use for testing submodule insertions
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fb884c62
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2018-02-28T14:59:09
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Merge pull request #4555 from libgit2/ethomson/strncmp_stdcall
win32: strncmp -> git__strncmp for win32 STDCALL
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2022b004
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2018-02-28T12:06:59
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curl: explicitly initialize and cleanup global curl state
Our curl-based streams make use of the easy curl interface. This
interface automatically initializes and de-initializes the global curl
state by calling out to `curl_global_init` and `curl_global_cleanup`.
Thus, all global state will be repeatedly re-initialized when creating
multiple curl streams in succession. Despite being inefficient, this is
not thread-safe due to `curl_global_init` being not thread-safe itself.
Thus a multi-threaded programing handling multiple curl streams at the
same time is inherently racy.
Fix the issue by globally initializing and cleaning up curl's state.
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a33deeb4
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2018-02-28T12:20:23
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win32: strncmp -> git__strncmp
The win32 C library is compiled cdecl, however when configured with
`STDCALL=ON`, our functions (and function pointers) will use the stdcall
calling convention. You cannot set a `__stdcall` function pointer to a
`__cdecl` function, so it's easier to just use our `git__strncmp`
instead of sorting that mess out.
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a554d588
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2018-02-28T12:21:08
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tree: initialize the id we use for testing submodule insertions
Instead of laving it uninitialized and relying on luck for it to be non-zero,
let's give it a dummy hash so we make valgrind happy (in this case the hash
comes from `sha1sum </dev/null`.
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2424e64c
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2018-02-28T12:06:02
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config: harden our use of the backend objects a bit
When we create an iterator we don't actually know that we have a live config
object and we must instead only rely on the header. We fixed it to use this in a
previous commit, but this makes it harder to misuse by converting to use the
header object in the typecast.
We also guard inside the `config_refresh` function against being given a
snapshot (although callers right now do check).
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1785de4e
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2018-02-28T11:46:17
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config: move the level field into the header
We use it in a few places where we might have a full object or a snapshot so
move it to where we can actually access it.
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