Bug 1800724 (CVE-2020-5212)

Summary:	CVE-2020-5212 nethack: MENUCOLOR configuration file option is subject to a buffer overflow
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	lewk, me, tachoknight
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2020-02-07 20:09:36 UTC	Type:	---
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1800725, 1800726
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-02-07 20:03:38 UTC

In NetHack before 3.6.5, an extremely long value for the MENUCOLOR configuration file option 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 upload their own configuration files. Users should upgrade to NetHack 3.6.5.

Reference:
https://github.com/NetHack/NetHack/security/advisories/GHSA-g89f-m829-4m56

Comment 1 Guilherme de Almeida Suckevicz 2020-02-07 20:03:57 UTC

Created nethack tracking bugs for this issue:

Affects: epel-8 [bug 1800726]
Affects: fedora-all [bug 1800725]

Comment 2 Product Security DevOps Team 2020-02-07 20:09:36 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

Comment 3 Ron Olson 2020-02-07 20:10:50 UTC

3.6.5 fixes all these and has already been pushed to stable for F30 and F31, and is still in testing for EPEL8

https://bodhi.fedoraproject.org/updates/FEDORA-2020-517b2845a1 F31
https://bodhi.fedoraproject.org/updates/FEDORA-2020-659277b3b8 F30
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2020-b1d1e3e81d EPEL8