vulnerability
FreeBSD: VID-d923fb0c-8c2f-11ec-aa85-0800270512f4 (CVE-2021-45444): zsh -- Arbitrary command execution vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:H/Au:N/C:P/I:P/A:P) | Feb 12, 2022 | Nov 4, 2022 | Dec 10, 2025 |
Severity
5
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:P)
Published
Feb 12, 2022
Added
Nov 4, 2022
Modified
Dec 10, 2025
Description
Marc Cornellà reports: Some prompt expansion sequences, such as %F, support 'arguments' which are themselves expanded in case they contain colour values, etc. This additional expansion would trigger PROMPT_SUBST evaluation, if enabled. This could be abused to execute code the user didn't expect. e.g., given a certain prompt configuration, an attacker could trick a user into executing arbitrary code by having them check out a Git branch with a specially crafted name.
Solution
freebsd-upgrade-package-zsh
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