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USN-5325-1: Zsh vulnerabilities

14 March 2022

Several security issues were fixed in Zsh.

Releases

Packages

  • zsh - shell with lots of features

Details

Sam Foxman discovered that Zsh incorrectly handled certain inputs.
An attacker could possibly use this issue to regain dropped privileges.
(CVE-2019-20044)

It was discovered that Zsh incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2021-45444)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.