GNU Chess: Buffer overflow — GLSA 202107-28

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

Affected packages

Background

GNU Chess is a console based chess interfae.

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

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

References

• CVE-2021-30184

Release date
July 12, 2021

Latest revision
July 12, 2021: 1

Severity
normal

Exploitable
remote

Bugzilla entries

• 780855