[ GLSA 202107-28 ] GNU Chess

[GLSA]

Gentoo Linux Security Advisory

Title: GNU Chess: Buffer overflow (GLSA 202107-28)
Severity: normal
Exploitable: remote
Date: 2021-07-12
Bug(s): #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.

Affected Packages

Package: games-board/gnuchess
Vulnerable: < 6.2.8-r1
Unaffected: >= 6.2.8-r1
Architectures: All supported architectures


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: