CVE-2018-0502 — Improper Input Validation in ZSH

CWE-20 — Improper Input Validation9 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.7%
top 29.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
ZSHDebian ZSHCanonical Ubuntu Linux
Timeline
PublishedSep 5
Latest updateMay 13

Description

An issue was discovered in zsh before 5.6. The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages4 packages

▶NVDzsh/zsh< 5.6
▶debiandebian/zsh< zsh 5.6-1 (bookworm)
▶Debianzsh/zsh< 5.6-1+3
▶Ubuntuzsh/zsh< 5.0.2-3ubuntu6.3+2

Also affects: Ubuntu Linux 14.04, 16.04, 18.04

Patches

Patch: bugs.debian.org ↗Patch: sourceforge.net ↗Patch: bugs.debian.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-m962-vg7f-29fx: An issue was discovered in zsh before 5↗2022-05-13
▶
OSV
zsh vulnerabilities↗2018-09-11
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OSV
CVE-2018-0502: An issue was discovered in zsh before 5↗2018-09-05
▶

📋Vendor Advisories

3
Ubuntu
Zsh vulnerabilities↗2018-09-11
▶
Red Hat
zsh: Improper parsing of the shebang line with special chars↗2018-09-04
▶
Debian
CVE-2018-0502: zsh - An issue was discovered in zsh before 5.6. The beginning of a #! script file was...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-0502 zsh: Improper parsing of the shebang line with special chars [fedora-all]↗2018-09-06
▶
Bugzilla
CVE-2018-0502 zsh: Improper parsing of the shebang line with special chars↗2018-09-06
▶