CVE-2021-27135

NameCVE-2021-27135
Descriptionxterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining character sequence.
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)
ReferencesDLA-2558-1, ELA-363-1
Debian Bugs982439

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xterm (PTS)jessie, jessie (lts)312-2+deb8u4fixed
stretch (security), stretch (lts), stretch327-2+deb9u3fixed
buster344-1+deb10u2fixed
bullseye366-1+deb11u1fixed
sid, bookworm378-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xtermsourcejessie312-2+deb8u1ELA-363-1
xtermsourcestretch327-2+deb9u1DLA-2558-1
xtermsourcebuster344-1+deb10u1
xtermsource(unstable)366-1982439

Notes

https://www.openwall.com/lists/oss-security/2021/02/09/7
https://invisible-island.net/xterm/xterm.log.html#xterm_366
https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c

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