| Name | CVE-2018-10887 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1477-1, DLA-2936-1 |
| Debian Bugs | 903509 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libgit2 (PTS) | jessie, jessie (lts) | 0.21.1-3+deb8u1 | fixed |
| stretch (security) | 0.25.1+really0.24.6-1+deb9u1 | fixed |
| stretch (lts), stretch | 0.25.1+really0.24.6-1+deb9u3 | fixed |
| buster | 0.27.7+dfsg.1-0.2 | fixed |
| buster (security) | 0.27.7+dfsg.1-0.2+deb10u2 | fixed |
| bullseye | 1.1.0+dfsg.1-4+deb11u1 | fixed |
| bullseye (security) | 1.1.0+dfsg.1-4+deb11u2 | fixed |
| bookworm | 1.5.1+ds-1 | fixed |
| bookworm (security) | 1.5.1+ds-1+deb12u1 | fixed |
| sid, trixie | 1.7.2+ds-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a
https://github.com/libgit2/libgit2/commit/c1577110467b701dcbcf9439ac225ea851b47d22