DescriptionLynx, lynx-ssl, and lynx-cur before 2.8.6dev.8 allow remote attackers to cause a denial of service (infinite loop) via a web page or HTML email that contains invalid HTML including (1) a TEXTAREA tag with a large COLS value and (2) a large tag name in an element that is not terminated, as demonstrated by mangleme. NOTE: a followup suggests that the relevant trigger for this issue is the large COLS value.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDSA-1076-1, DSA-1077-1
Debian Bugs296340, 384725

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lynx (PTS)buster, buster (security)2.8.9rel.1-3+deb10u1fixed
bullseye (security), bullseye2.9.0dev.6-3~deb11u1fixed
bookworm, sid2.9.0dev.12-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lynxsource(unstable)2.8.5-2sarge1.2low296340, 384725

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