CVE-2020-21548

NameCVE-2020-21548
DescriptionLibsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.
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

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libsixel (PTS)stretch1.5.2-2+deb9u1vulnerable
buster1.8.2-1+deb10u1vulnerable
bookworm, sid, bullseye1.8.6-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
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/116
https://github.com/saitoha/libsixel/commit/9d0a7ff417b66d80a4bff714de1f27b24742f55a (v1.8.4)

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