CVE-2024-34078

NameCVE-2024-34078
Descriptionhtml-sanitizer is an allowlist-based HTML cleaner. If using `keep_typographic_whitespace=False` (which is the default), the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. The problem has been fixed in 2.4.2.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3856-1
Debian Bugs1070710

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-html-sanitizer (PTS)bullseye1.9.1-2vulnerable
bullseye (security)1.9.1-2+deb11u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-html-sanitizersourcebullseye1.9.1-2+deb11u1DLA-3856-1
python-html-sanitizersource(unstable)(unfixed)1070710

Notes

https://github.com/matthiask/html-sanitizer/security/advisories/GHSA-wvhx-q427-fgh3
https://github.com/matthiask/html-sanitizer/commit/48db42fc5143d0140c32d929c46b802f96913550 (2.4.2)
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