Gentoo: GLSA-202407-01: Zsh: Prompt Expansion VulnerabilitySecurity Advisory Updates
Summary
Multiple vulnerabilities have been discovered in Zsh. Please review the
CVE identifiers referenced below for details.
Resolution
All Zsh users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/zsh-5.8.1"
References
[ 1 ] CVE-2021-45444
https://nvd.nist.gov/vuln/detail/CVE-2021-45444
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202407-01
Concerns
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
Synopsis
A vulnerability has been discovered in Zsh, which can lead to execution
of arbitrary code.
Background
A shell designed for interactive use, although it is also a powerful
scripting language.
Affected Packages
Package Vulnerable Unaffected
-------------- ------------ ------------
app-shells/zsh < 5.8.1 >= 5.8.1
Impact
A vulnerability in prompt expansion could be exploited through e.g.
VCS_Info to execute arbitrary shell commands without a user's knowledge.
Workaround
There is no known workaround at this time.
