Amazon Linux 2 Security Advisory: ALAS-2022-1757
Advisory Release Date: 2022-03-01 17:43 Pacific
Advisory Updated Date: 2022-03-04 21:15 Pacific
Severity:
Medium
Issue Overview:
A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)
Affected Packages:
zsh
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update zsh to update your system.
New Packages:
aarch64:
zsh-5.8.1-1.amzn2.0.1.aarch64
zsh-debuginfo-5.8.1-1.amzn2.0.1.aarch64
i686:
zsh-5.8.1-1.amzn2.0.1.i686
zsh-debuginfo-5.8.1-1.amzn2.0.1.i686
noarch:
zsh-html-5.8.1-1.amzn2.0.1.noarch
src:
zsh-5.8.1-1.amzn2.0.1.src
x86_64:
zsh-5.8.1-1.amzn2.0.1.x86_64
zsh-debuginfo-5.8.1-1.amzn2.0.1.x86_64