VulnerabilityModified
CVE-2021-30184
GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data.
HIGH 7.8EPSS 1.77%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.77% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- gnu/chess · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QC74RWMDLSQGV6Z3ZABNTPABB33S4YNF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOGPLC77ZL2FACSOE5MWDS3YH3RBNQAQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXOTMUSBVUZNA3JMPG6BU37DQW2YOJWS/
- https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00000.htmlExploit, Mailing List, Patch, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00001.htmlExploit, Mailing List, Vendor Advisory
- https://security.gentoo.org/glsa/202107-28Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/01/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QC74RWMDLSQGV6Z3ZABNTPABB33S4YNF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOGPLC77ZL2FACSOE5MWDS3YH3RBNQAQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXOTMUSBVUZNA3JMPG6BU37DQW2YOJWS/
- https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00000.htmlExploit, Mailing List, Patch, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00001.htmlExploit, Mailing List, Vendor Advisory
- https://security.gentoo.org/glsa/202107-28Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.