Bug 1800752 (CVE-2020-5209) - CVE-2020-5209 nethack: command line parsing of options starting with -de and -i is subject to a buffer overflow
Summary: CVE-2020-5209 nethack: command line parsing of options starting with -de and ...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-5209
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1800753 1800754
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-02-07 20:32 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-02-08 02:09 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2020-02-08 02:09:36 UTC
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Description Guilherme de Almeida Suckevicz 2020-02-07 20:32:57 UTC 
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.

Reference:
https://github.com/NetHack/NetHack/security/advisories/GHSA-fw72-r8xm-45p8

Upstream commit:
https://github.com/NetHack/NetHack/commit/f3def5c0b999478da2d0a8f0b6a7c370a2065f77
Comment 1 Guilherme de Almeida Suckevicz 2020-02-07 20:33:26 UTC 
Created nethack tracking bugs for this issue:

Affects: epel-8 [bug 1800753]
Affects: fedora-all [bug 1800754]
Comment 2 Ron Olson 2020-02-07 20:33:55 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
Comment 3 Product Security DevOps Team 2020-02-08 02:09:36 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.
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