CVE-2018-7549 — Improper Input Validation in ZSH

CWE-20 — Improper Input ValidationCWE-665 — Improper Initialization8 documents7 sources
Severity
7.5HIGHNVD
OSV7.8
EPSS
0.2%
top 55.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
ZSHDebian ZSHCanonical Ubuntu Linux+3 more
Timeline
PublishedFeb 27
Latest updateMay 14

Description

In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages7 packages

▶debiandebian/zsh< zsh 5.5-1 (bookworm)
▶Debianzsh/zsh< 5.5-1+3
▶Ubuntuzsh/zsh< 5.0.2-3ubuntu6.1+1
▶NVDzsh/zsh5.4.2

Also affects: Ubuntu Linux 14.04, 16.04, 17.10

Patches

Patch: sourceforge.net ↗Patch: sourceforge.net ↗

🔴Vulnerability Details

3
GHSA
GHSA-mfcw-g327-phj2: In params↗2022-05-14
▶
OSV
zsh vulnerabilities↗2018-03-08
▶
OSV
CVE-2018-7549: In params↗2018-02-27
▶

📋Vendor Advisories

3
Ubuntu
Zsh vulnerabilities↗2018-03-08
▶
Debian
CVE-2018-7549: zsh - In params.c in zsh through 5.4.2, there is a crash during a copy of an empty has...↗2018
▶
Red Hat
zsh: crash on copying empty hash table↗2017-12-22
▶

💬Community

1
Bugzilla
CVE-2018-7549 zsh: crash on copying empty hash table↗2018-02-27
▶