CVE-2023-24809

EUVD-2023-28807

17.02.2023, 20:15

NetHack is a single player dungeon exploration game. Starting with version 3.6.2 and prior to version 3.6.7, illegal input to the "C" (call) command can cause a buffer overflow and crash the NetHack process. This vulnerability may be a security issue for systems that have NetHack installed suid/sgid and for shared systems. For all systems, it may result in a process crash. This issue is resolved in NetHack 3.6.7. There are no known workarounds.

Classic Buffer Overflow

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	5.5 MEDIUM	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub_M	CNA	5.5 MEDIUM	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 15%

Affected Products (NVD)

Vendor	Product	Version
nethack	nethack	3.6.2 ≤ 𝑥 < 3.6.7

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

nethack

bookworm	ignored
bullseye	no-dsa
buster	no-dsa
sid	3.6.7-1 fixed
trixie	3.6.7-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

nethack

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
kinetic	ignored
lunar	ignored
mantic	ignored
noble	needs-triage
oracular	needs-triage
trusty	ignored
xenial	needs-triage

Common Weakness Enumeration

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

References

https://github.com/NetHack/NetHack/security/advisories/GHSA-2cqv-5w4v-mgch

https://nethack.org/security/CVE-2023-24809.html

https://github.com/NetHack/NetHack/security/advisories/GHSA-2cqv-5w4v-mgch

https://nethack.org/security/CVE-2023-24809.html