CVE-2021-45444

zsh: The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor

CVE-2021-45444 is fixed in 6 products on 1 platform, first by zsh 5.4.2-3ubuntu3.2, released February 14, 2022. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0198
80th percentile

The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es): * zsh: Prompt expansion vulnerability (CVE-2021-45444) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
zsh · Debian 11.6 (bullseye) 5.8-6+deb11u1 DSA-5078-1 Feb 16, 2022
zsh · Debian 12.15 (bookworm) 5.8.1-1 DEBIAN-CVE-2021-45444 Feb 14, 2022
zsh · Debian 13.5 (trixie) 5.8.1-1 DEBIAN-CVE-2021-45444 Feb 14, 2022
zsh · Debian 14 5.8.1-1 DEBIAN-CVE-2021-45444 Feb 14, 2022
zsh · RHEL 8 0:5.5.1-9.el8 RHSA-2022:2120 May 10, 2022
zsh · Ubuntu 18.04.6 LTS (bionic) 5.4.2-3ubuntu3.2 zsh 5.4.2-3ubuntu3.2 Feb 14, 2022
zsh · Ubuntu 20.04 LTS (focal) 5.8-3ubuntu1.1 zsh 5.8-3ubuntu1.1 Feb 14, 2022
zsh · almalinux 8 5.5.1-9.el8 ALSA-2022:2120 May 10, 2022
zsh · amzn 2023 5.8.1-1.amzn2023.0.3 ALAS2023-2023-035 Feb 17, 2023
zsh · ol 8 0:5.5.1-9.el8 ELSA-2022-2120 May 17, 2022
zsh · rocky 8 0:5.5.1-9.el8 RLSA-2022:2120 May 10, 2022
zsh-common · Ubuntu 18.04.6 LTS (bionic) 5.4.2-3ubuntu3.2 zsh-common 5.4.2-3ubuntu3.2 Feb 14, 2022
zsh-common · Ubuntu 20.04 LTS (focal) 5.8-3ubuntu1.1 zsh-common 5.8-3ubuntu1.1 Feb 14, 2022
zsh-debuginfo · amzn 2023 5.8.1-1.amzn2023.0.3 ALAS2023-2023-035 Feb 17, 2023
zsh-debugsource · amzn 2023 5.8.1-1.amzn2023.0.3 ALAS2023-2023-035 Feb 17, 2023
zsh-html · RHEL 8 0:5.5.1-9.el8 RHSA-2022:2120 May 10, 2022
zsh-html · almalinux 8 5.5.1-9.el8 ALSA-2022:2120 May 10, 2022
zsh-html · amzn 2023 5.8.1-1.amzn2023.0.3 ALAS2023-2023-035 Feb 17, 2023
zsh-html · ol 8 0:5.5.1-9.el8 ELSA-2022-2120 May 17, 2022
zsh-static · Ubuntu 18.04.6 LTS (bionic) 5.4.2-3ubuntu3.2 zsh-static 5.4.2-3ubuntu3.2 Feb 14, 2022
zsh-static · Ubuntu 20.04 LTS (focal) 5.8-3ubuntu1.1 zsh-static 5.8-3ubuntu1.1 Feb 14, 2022

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