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CVE-2020-5209

Published: 28 January 2020

In NetHack before 3.6.5, unknown options starting with -de and -i can cause a buffer overflow resulting in a crash or remote code execution/privilege escalation. This vulnerability affects systems that have NetHack installed suid/sgid and shared systems that allow users to influence command line options. Users should upgrade to NetHack 3.6.5.

Notes

AuthorNote
msalvatore
Nethack is installed sgid games, but not suid or sgid root.

Priority

Low

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
nethack
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Ignored
(end of life)
trusty Does not exist

upstream
Released (2.6.5)
impish Not vulnerable
(3.6.6-1)
groovy Not vulnerable
(3.6.6-1)
hirsute Not vulnerable
(3.6.6-1)
xenial Needs triage

jammy Not vulnerable
(3.6.6-1)
focal Needs triage

kinetic Not vulnerable
(3.6.6-1)
lunar Not vulnerable
(3.6.6-1)
mantic Not vulnerable
(3.6.6-1)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H