PT-2020-18347 · Nethack Devteam · Nethack

Nhkeni · Published 2020-03-10 · Updated 2025-03-16 · CVE-2020-5253

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 3.6.0

Description The issue allows malicious use of escaping of characters in the configuration file, usually .nethackrc, which could be exploited.

Recommendations For versions prior to 3.6.0, update to NetHack 3.6.0 to resolve the issue.

Fix

Incomplete List of Disallowed Inputs

Improper Privilege Management

Weakness Enumeration

CWE-184

CWE-269

Related Identifiers

CVE-2020-5253

GHSA-2C7P-3FJ4-223M

OPENSUSE-SU-2025:14898-1

Affected Products

Nethack

References · 14

• https://github.com/NetHack/NetHack/commits/612755bfb5c412079795c68ba392df5d93874ed8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-5253 · Security Note
• https://osv.dev/vulnerability/CVE-2020-5253 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-5253 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:14898-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-5253 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-5253 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-5253 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-5253 · Vendor Advisory
• https://github.com/NetHack/NetHack/security/advisories/GHSA-2c7p-3fj4-223m · Note
• https://lists.opensuse.org/archives/list/[e-mail]/thread/ZXWYIIFE7GQMOSGULGWD55HZTUENYTOP · Note
• https://t.me/cvenotify/1474 · Telegram Post
• https://suse.com/security/cve/CVE-2020-5253 · Note
• https://nethack.org/security/CVE-2020-5253.html · Note