CVE-2021-30184: GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data

High severity · published Apr 7, 2021

CVE-2021-30184

GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data

7.8

CVSS

1.8%

EPSS

On KEV

Description

GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data. This is related to a buffer overflow in the use of a .tmp.epd temporary file in the cmd_pgnload and cmd_pgnreplay functions in frontend/cmd.cc.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.8% · higher than 78% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Chess · Gnu

6.2.7 · source: NVD

Fedora · Fedoraproject

32; 33; 34 · source: NVD

Affected product

Fedora

Fedoraproject

All Fedora CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-30184

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-30184

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QC74RWMDLSQGV6Z3ZABNTPABB33S4YNF/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOGPLC77ZL2FACSOE5MWDS3YH3RBNQAQ/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXOTMUSBVUZNA3JMPG6BU37DQW2YOJWS/

Exploit

https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00000.html

Exploit

https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00001.html

Third Party Advisory

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