CVE-2021-45444 — Command Injection in Apple MAC OS X

CWE-77 — Command Injection12 documents9 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 70.10%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
ZSHApple MAC OS XApple Macos+2 more
Timeline
PublishedFeb 14
Latest updateMay 16

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶NVDzsh/zsh< 5.8.1
▶NVDapple/macos11.0 — 11.6.6+1
▶NVDapple/mac_os_x10.15 — 10.15.7+1
▶Debianzsh/zsh< 5.8-6+deb11u1+3
▶Ubuntuzsh/zsh< 5.4.2-3ubuntu3.2+2

Also affects: Debian Linux 10.0, 11.0, 9.0, Fedora 34, 35

🔴Vulnerability Details

4
OSV
zsh vulnerabilities↗2022-03-14
▶
GHSA
GHSA-735j-r9q6-48mw: In zsh before 5↗2022-02-15
▶
OSV
CVE-2021-45444: In zsh before 5↗2022-02-14
▶
CVEList
CVE-2021-45444: In zsh before 5↗2022-02-13
▶

📋Vendor Advisories

7
Apple
CVE-2021-45444: macOS Big Sur 11.6.6↗2022-05-16
▶
Apple
CVE-2021-45444: Security Update 2022-004 Catalina↗2022-05-16
▶
Apple
CVE-2021-45444: macOS Monterey 12.4↗2022-05-16
▶
Ubuntu
Zsh vulnerabilities↗2022-03-14
▶
Red Hat
zsh: Prompt expansion vulnerability↗2022-02-12
▶
CVE-2021-45444 — Command Injection in Apple MAC OS X | cvebase