CVE-2020-27347

NameCVE-2020-27347
DescriptionIn tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.
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
tmux (PTS)stretch2.3-4fixed
buster2.8-3fixed
bullseye, sid3.1c-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tmuxsourcestretch(not affected)
tmuxsourcebuster(not affected)
tmuxsource(unstable)3.1c-1

Notes

[buster] - tmux <not-affected> (Vulnerable code introduced later)
[stretch] - tmux <not-affected> (Vulnerable code introduced later)
https://www.openbsd.org/errata68.html (003: SECURITY FIX: October 29, 2020)
Introduced by: https://github.com/tmux/tmux/commit/4e3d6612845e190a490f40cce79c858dadaee74b (2.9)
Fixed by: https://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701c
https://www.openwall.com/lists/oss-security/2020/11/05/3

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