| Name | CVE-2022-4170 |
| Description | The rxvt-unicode package is vulnerable to a remote code execution, in the Perl background extension, when an attacker can control the data written to the user's terminal and certain options are set. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1025489 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| rxvt-unicode (PTS) | jessie | 9.20-1 | vulnerable |
| stretch (security), stretch (lts), stretch | 9.22-1+deb9u1 | vulnerable |
| buster | 9.22-6+deb10u1 | fixed |
| bullseye | 9.22-11 | fixed |
| bookworm | 9.30-2 | vulnerable |
| sid, trixie | 9.31-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - rxvt-unicode <ignored> (Minor issue, not exploitable due to a bug)
[bullseye] - rxvt-unicode <not-affected> (Vulnerable code introduced later)
[buster] - rxvt-unicode <not-affected> (Vulnerable code introduced later)
https://www.openwall.com/lists/oss-security/2022/12/05/1
http://cvs.schmorp.de/rxvt-unicode/src/perl/background?r1=1.105&r2=1.109
Not exploitable due to a bug since 9.30 upstream