Buffer overflow in Nethack
CVE-2023-24809
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Nethack — versions >= 3.6.2, < 3.6.7
Weakness classification (CWE)
References
- github.com/NetHack/NetHack/security/advisories/GHSA-2cqv-5w4v-mgch (Vendor Advisory)
- nethack.org/security/CVE-2023-24809.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-24809?
- CVE-2023-24809 is a medium-severity vulnerability in Nethack, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2023-02-17.
- How severe is CVE-2023-24809?
- Medium severity. CVSS v3 base score is 5.5 out of 10.