Vulnerability CVE-2019-16787
Published: 2019-12-20   Modified: 2019-12-21

Description:
In NatHack between 3.6.0 and 3.6.3, a buffer overflow issue exists when reading very long lines from a NetHack configuration file (usually named .nethackrc). This vulnerability affects systems that have NetHack installed suid/sgid and shared systems that allow users to upload their own configuration files. All users are urged to upgrade to NetHack 3.6.4 as soon as possible.

Type:

CWE-120

 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
CWI -> Nethack 

 References:
https://github.com/NetHack/NetHack/commit/f001de79542b8c38b1f8e6d7eaefbbd28ab94b47
https://github.com/NetHack/NetHack/security/advisories/GHSA-3cm7-rgh5-9pq5
https://nethack.org/security/
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