CVE-2020-21049

NameCVE-2020-21049
DescriptionAn invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.
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
libsixel (PTS)jessie1.1.2-1vulnerable
stretch1.5.2-2+deb9u1vulnerable
buster1.8.2-1+deb10u1vulnerable
bullseye1.8.6-2fixed
sid, trixie, bookworm1.10.3-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libsixelsourcejessie(unfixed)end-of-life
libsixelsource(unstable)1.8.6-1

Notes

[buster] - libsixel <no-dsa> (Minor issue)
[stretch] - libsixel <no-dsa> (Minor issue)
https://github.com/saitoha/libsixel/issues/74
https://github.com/saitoha/libsixel/commit/0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d (v1.8.5)

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