CVE-2020-12279

NameCVE-2020-12279
DescriptionAn issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2936-1, DLA-3340-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libgit2 (PTS)jessie, jessie (lts)0.21.1-3+deb8u1vulnerable
stretch (security)0.25.1+really0.24.6-1+deb9u1fixed
stretch (lts), stretch0.25.1+really0.24.6-1+deb9u3fixed
buster (security), buster, buster (lts)0.27.7+dfsg.1-0.2+deb10u2fixed
bullseye (security), bullseye1.1.0+dfsg.1-4+deb11u2fixed
bookworm (security), bookworm1.5.1+ds-1+deb12u1fixed
sid, trixie1.8.4+ds-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libgit2sourcestretch0.25.1+really0.24.6-1+deb9u1DLA-2936-1
libgit2sourcebuster0.27.7+dfsg.1-0.2+deb10u1DLA-3340-1
libgit2source(unstable)0.28.4+dfsg.1-2

Notes

[jessie] - libgit2 <no-dsa> (Minor issue; only problematic when used on NTFS like filesystem)
https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4

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