DescriptionIn Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmentation Fault), as demonstrated by an invalid ISALNUM argument.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tidy-html5 (PTS)buster2:5.6.0-10fixed
bookworm, bullseye, sid, trixie2:5.6.0-11fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tidysource(unstable)(not affected)
tidy-html5source(unstable)(not affected)


- tidy-html5 <not-affected> (Vulnerable code introduced later)
- tidy <not-affected> (Vulnerable code introduced later)

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