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Gentoo: GLSA-202107-28 Normal Severity: GNU Chess Code Execution Risk

gentoo
Calendar Grey July 11, 2021
Dist Gentoo Esm H88
Gentoo Linux recommends updating GNU Chess in light of a buffer overflow vulnerability that may enable malicious entities to execute arbitrary code.
A buffer overflow in GNU Chess might allow arbitrary code execution.

Summary

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.

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
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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: Normal
Title: GNU Chess: Buffer overflow
Date: July 12, 2021
Bugs: #780855
ID: 202107-28

Synopsis

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

Background

GNU Chess is a console based chess interfae.

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Affected Packages

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

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.

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