CVE-2023-24809 - CVE House

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Status published Medium CVE-2023-24809

NetHack Call command buffer overflow

5.5 CVSS

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from NetHack

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NetHack hilite_status parsing privilege escalation

Privilege escalation in NetHack

NetHack error recovery after syntax error in configuration file is subject to a buffer overflow

NetHack SYMBOL configuration file option is subject to a buffer overflow

NetHack MENUCOLOR configuration file option is subject to a buffer overflow

Affected Vendor

NetHack

View all reports →

Affected Software

NetHack

Vulnerable Versions:

>= 3.6.2, < 3.6.7

Timeline

Official Publish: February 17th, 2023

Last Modified: March 10th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion

T1105 Ingress Tool Transfer

Command and Control