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[gentoo-announce] [ GLSA 202107-28 ] GNU Chess: Buffer overflow

Posted on 12 July 2021
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202107-28
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https://security.gentoo.org/
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Severity: Normal
Title: GNU Chess: Buffer overflow
Date: July 12, 2021
Bugs: #780855
ID: 202107-28

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Synopsis
========
A buffer overflow in GNU Chess might allow arbitrary code execution.

Background
==========
GNU Chess is a console based chess interfae.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 games-board/gnuchess < 6.2.8-r1 >= 6.2.8-r1

Description
===========
The cmd_pgnload() and cmd_pgnreplay() functions in cmd.cc in GNU Chess
to not sufficiently validate PGN file input, potentially resulting in a
buffer overflow.

Impact
======
A remote attacker could entice a user to open a specially crafted PGN
file using GNU Chess, possibly resulting in execution of arbitrary code
with the privileges of the process or a Denial of Service condition.

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

Resolution
==========
All GNU Chess users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=games-board/gnuchess-6.2.8-r1"

References
==========
[ 1 ] CVE-2021-30184
https://nvd.nist.gov/vuln/detail/CVE-2021-30184

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

https://security.gentoo.org/glsa/202107-28

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


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