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Gentoo 202003-55 Normal: Zsh Privilege Escalation Risk Advisory

gentoo
Calendar Grey March 25, 2020
Dist Gentoo Esm H88
Uncover the Zsh security vulnerability affecting Gentoo Linux and explore effective measures to address the concern highlighted in GLSA-202003-55.
A vulnerability in Zsh might allow an attacker to escalate privileges.

Summary

It was discovered that Zsh was insecure dropping privileges when unsetting PRIVILEGED option.

Topics%20covered

Topics Covered

security advisory gentoo privilege escalation advisory normal severity zsh

Resolution

All Zsh users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/zsh-5.8"

References

[ 1 ] CVE-2019-20044 https://nvd.nist.gov/vuln/detail/CVE-2019-20044

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-55
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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.

Severity: Normal
Title: Zsh: Privilege escalation
Date: March 25, 2020
Bugs: #711136
ID: 202003-55

Topics%20covered

Topics Covered

security advisory gentoo privilege escalation advisory normal severity zsh

Synopsis

A vulnerability in Zsh might allow an attacker to escalate privileges.

Background

A shell designed for interactive use, although it is also a powerful scripting language.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-shells/zsh < 5.8 >= 5.8

Impact

===== An attacker could escalate privileges.

Workaround

There is no known workaround at this time.

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