| Name | CVE-2020-27347 |
| Description | In 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. |
| Source | CVE (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 Package | Release | Version | Status |
|---|
| tmux (PTS) | buster | 2.8-3 | fixed |
| buster (security) | 2.8-3+deb10u1 | fixed |
| bullseye | 3.1c-1+deb11u1 | fixed |
| bookworm | 3.3a-3 | fixed |
| trixie | 3.3a-5 | fixed |
| sid | 3.4-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| tmux | source | stretch | (not affected) | | | |
| tmux | source | buster | (not affected) | | | |
| tmux | source | (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