| Name | CVE-2021-45444 |
| Description | In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2926-1, DSA-5078-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| zsh (PTS) | buster, buster (security) | 5.7.1-1+deb10u1 | fixed |
| bullseye (security), bullseye | 5.8-6+deb11u1 | fixed |
| bookworm | 5.9-4 | fixed |
| sid, trixie | 5.9-6 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://sourceforge.net/p/zsh/code/ci/c187154f47697cdbf822c2f9d714d570ed4a0fd1/
https://sourceforge.net/p/zsh/code/ci/fdb8b0ce6244ff26bf55e0fd825310a58d0d3156/
https://sourceforge.net/p/zsh/code/ci/bdc4d70a7e033b754e68a8659a037ea0fc5f38de/