PT-2020-18309 · Nethack · Nethack

Nhkeni · Published 2020-01-28 · Updated 2021-02-10 · CVE-2020-5213

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions NetHack versions prior to 3.6.5

Description The issue is caused by a buffer overflow resulting from too long of a value for the SYMBOL configuration file option, potentially leading to a crash or remote code execution/privilege escalation. This affects systems with NetHack installed suid/sgid and shared systems allowing users to upload their own configuration files.

Recommendations For versions prior to 3.6.5, upgrade to NetHack 3.6.5 to resolve the issue. As a temporary workaround, consider restricting the ability for users to upload their own configuration files to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2020-5213

GHSA-RR25-4V34-PR7V

MGASA-2021-0077

Affected Products

Nethack

References · 25

• https://osv.dev/vulnerability/CVE-2020-5213 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-5213 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0077 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-5213 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-5213 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0077.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-5213 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-5213 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-5213 · Vendor Advisory
• https://github.com/NetHack/NetHack/security/advisories/GHSA-rr25-4v34-pr7v · Note
• https://nethack.org/v364/release.html · Note
• https://nethack.org/v365/release.html · Note
• https://nethack.org/security/CVE-2019-19905.html · Note
• https://nethack.org/security/CVE-2020-5254.html · Note
• https://t.me/cvenotify/540 · Telegram Post