CVE-2018-6406

NameCVE-2018-6406
DescriptionThe function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
chromium-browser (PTS)jessie (security), jessie57.0.2987.98-1~deb8u1vulnerable
stretch63.0.3239.84-1~deb9u1vulnerable
stretch (security)67.0.3396.87-1~deb9u1vulnerable
buster, sid67.0.3396.87-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
chromium-browsersource(unstable)(unfixed)unimportant

Notes

Chromium is built with support for VP9 disabled in Debian
https://bugs.chromium.org/p/webm/issues/detail?id=1492
https://github.com/dwfault/PoCs/blob/master/libwebm%20ParseVP9SuperFrameIndex%20memory%20corruption/libwebm%20ParseVP9SuperFrameIndex%20OOB%20read.md

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