Description
A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An attacker may use this flaw to leak memory addresses or cause a Denial of Service.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
libgit2 libgit2
before version 0.27.3affected
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1598021 ↗
- https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html ↗
- https://github.com/libgit2/libgit2/releases/tag/v0.27.3 ↗
- https://github.com/libgit2/libgit2/commit/c1577110467b701dcbcf9439ac225ea851b47d22 ↗
- https://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a ↗
- https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html ↗