An OpenDoas security update has been released for Gentoo Linux.

GLSA 202107-11 : OpenDoas: Insufficient environment filtering

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Gentoo Linux Security Advisory GLSA 202107-11
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  https://security.gentoo.org/
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Severity: Normal
Title: OpenDoas: Insufficient environment filtering
Date: July 07, 2021
Bugs: #767781
ID: 202107-11

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Synopsis
=======
A vulnerability in OpenDoas could lead to privilege escalation.

Background
=========
OpenDoas allows users to run commands as other users.

Affected packages
================
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Package / Vulnerable / Unaffected
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1 app-admin/doas < 6.8.1 >= 6.8.1

Description
==========
OpenDoas does not properly filter the PATH variable from the resulting
shell after escalating privileges.

Impact
=====
A local attacker with control of a user's PATH variable could escalate
privileges if that user uses OpenDoas with a poisoned PATH variable.

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

Resolution
=========
All OpenDoas users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/doas-6.8.1"

References
=========
[ 1 ] CVE-2019-25016
  https://nvd.nist.gov/vuln/detail/CVE-2019-25016

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/202107-11

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 2021 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