CVE-2023-37463

NameCVE-2023-37463
Descriptioncmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1041097, 1041098, 1041099, 1041100

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
cmark-gfm (PTS)bullseye0.29.0.gfm.0-6vulnerable
bookworm, sid, trixie0.29.0.gfm.6-6vulnerable
python-cmarkgfm (PTS)bullseye0.4.2-1vulnerable
bookworm, sid, trixie0.8.0-3vulnerable
r-cran-commonmark (PTS)bullseye1.7-2vulnerable
bookworm1.8.1-1vulnerable
trixie1.9.1-1fixed
sid1.9.2-1fixed
ruby-commonmarker (PTS)bullseye0.21.0-1vulnerable
bookworm0.23.6-1vulnerable
sid, trixie0.23.10-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
cmark-gfmsource(unstable)(unfixed)1041097
python-cmarkgfmsource(unstable)(unfixed)1041098
r-cran-commonmarksource(unstable)1.9.1-11041099
ruby-commonmarkersource(unstable)(unfixed)1041100

Notes

[bookworm] - cmark-gfm <no-dsa> (Minor issue)
[bullseye] - cmark-gfm <no-dsa> (Minor issue)
[buster] - cmark-gfm <no-dsa> (Minor issue)
[bookworm] - python-cmarkgfm <no-dsa> (Minor issue)
[bullseye] - python-cmarkgfm <no-dsa> (Minor issue)
[buster] - python-cmarkgfm <no-dsa> (Minor issue)
[bookworm] - r-cran-commonmark <ignored> (Minor issue)
[bullseye] - r-cran-commonmark <no-dsa> (Minor issue)
[buster] - r-cran-commonmark <no-dsa> (Minor issue)
[bookworm] - ruby-commonmarker <ignored> (Minor issue)
[bullseye] - ruby-commonmarker <no-dsa> (Minor issue)
[buster] - ruby-commonmarker <no-dsa> (Minor issue)
https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5
https://github.com/theacodes/cmarkgfm/commit/acf473a51a9dc3a4fd6d6a4b30e4d80c94d91d4a (2024.1.14)
r-cran-commonmark: https://github.com/r-lib/commonmark/commit/969e27ea29dce1c2d7ab9b9909640bb4643d460f (v1.9.1)

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