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[gentoo-announce] [ GLSA 202305-12 ] sudo: Root Privilege Escalation

Posted on 03 May 2023
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202305-12
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https://security.gentoo.org/
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Severity: High
Title: sudo: Root Privilege Escalation
Date: May 03, 2023
Bugs: #891335
ID: 202305-12

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Synopsis
========
A vulnerability has been discovered in sudo which could result in root
privilege escalation.

Background
==========
sudo allows a system administrator to give users the ability to run
commands as other users.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/sudo < 1.9.12_p2 >= 1.9.12_p2

Description
===========
The sudoedit (aka -e) feature mishandles extra arguments passed in the
user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR),
allowing a local attacker to append arbitrary entries to the list of
files to process.

Impact
======
The improper processing of user's environment variables could lead to
the editing of arbitrary files as root, potentially leading to root
privilege escalation.

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

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.9.12_p2"

References
==========
[ 1 ] CVE-2023-22809
https://nvd.nist.gov/vuln/detail/CVE-2023-22809

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

https://security.gentoo.org/glsa/202305-12

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 2023 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
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