A buffer overflow in GNU Chess might allow arbitrary code execution.
|Package||games-board/gnuchess on all architectures|
|Affected versions||< 6.2.8-r1|
|Unaffected versions||>= 6.2.8-r1|
GNU Chess is a console based chess interfae.
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.
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.
There is no known workaround at this time.
All GNU Chess users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=games-board/gnuchess-6.2.8-r1"
July 12, 2021
July 12, 2021: 1