Buffer overflow in NetHack - CVE-2019-19905
Published: December 19, 2019 / Updated: July 28, 2020
Vulnerability identifier: #VU31988
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-19905
CWE-ID: CWE-120
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: The NetHack DevTeam
Affected software:
NetHack
NetHack
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
NetHack 3.6.x before 3.6.4 is prone to a buffer overflow vulnerability when reading very long lines from configuration files. This affects systems that have NetHack installed suid/sgid, and shared systems that allow users to upload their own configuration files.
How to mitigate CVE-2019-19905
Install update from vendor's website.
Sources
- https://bugs.debian.org/947005
- https://github.com/NetHack/NetHack/commit/f001de79542b8c38b1f8e6d7eaefbbd28ab94b47
- https://github.com/NetHack/NetHack/commit/f4a840a48f4bcf11757b3d859e9d53cc9d5ef226
- https://github.com/NetHack/NetHack/security/advisories/GHSA-3cm7-rgh5-9pq5
- https://nethack.org/security/