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Gentoo Linux Security Advisory                           GLSA 202003-55
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Zsh: Privilege escalation
     Date: March 25, 2020
     Bugs: #711136
       ID: 202003-55

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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.

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

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

Impact
=====
An attacker could escalate privileges.

Workaround
=========
There is no known workaround at this time.

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

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.

License
======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/

Gentoo: GLSA-202003-55: Zsh: Privilege escalation

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.

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

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

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.

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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