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FreeBSD: VID-D923FB0C-8C2F-11EC-AA85-0800270512F4 (CVE-2021-45444): zsh -- Arbitrary command execution vulnerability

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FreeBSD: VID-D923FB0C-8C2F-11EC-AA85-0800270512F4 (CVE-2021-45444): zsh -- Arbitrary command execution vulnerability

Severity
5
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:P)
Published
02/12/2022
Created
11/08/2022
Added
11/04/2022
Modified
11/04/2022

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.

Solution(s)

  • freebsd-upgrade-package-zsh

References

  • CVE-2021-45444
  • USN-5325-1

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