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Gentoo Linux Security Advisory                           GLSA 202211-08
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: sudo: Heap-Based Buffer Overread
     Date: November 22, 2022
     Bugs: #879209
       ID: 202211-08

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Synopsis
=======
A vulnerability has been discovered in sudo which could result in denial
of service.

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-r1              >= 1.9.12-r1

Description
==========
In certain password input handling, sudo incorrectly assumes the
password input is at least nine bytes in size, leading to a heap buffer
overread.

Impact
=====
In the worst case, the heap buffer overread can result in the denial of
service of the sudo process.

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-r1"

References
=========
[ 1 ] CVE-2022-43995
      https://nvd.nist.gov/vuln/detail/CVE-2022-43995

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

 https://security.gentoo.org/glsa/202211-08

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 2022 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/