| Name | CVE-2017-18205 |
| Description | In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set. |
| 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 |
|---|
| zsh (PTS) | jessie, jessie (lts) | 5.0.7-5+deb8u4 | vulnerable |
| stretch (security), stretch (lts), stretch | 5.3.1-4+deb9u5 | vulnerable |
| buster (security), buster, buster (lts) | 5.7.1-1+deb10u1 | fixed |
| bullseye (security), bullseye | 5.8-6+deb11u1 | fixed |
| bookworm | 5.9-4 | fixed |
| sid, trixie | 5.9-8 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| zsh | source | (unstable) | 5.4.1-1 | unimportant | | |
Notes
https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58
no security impact