Bug 905652 (CVE-2013-0238)

Summary:	CVE-2013-0238 ircd-hybrid: DoS due to not validating input when parsing masks
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	affix, mmahut
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-02-02 23:47:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	905653
Bug Blocks:

Description Vincent Danen 2013-01-29 21:15:31 UTC

It was reported [1] that ircd-hybrid suffers from a denial of service condition due to improper validation of input when parsing masks.  Because try_parse_v4_netmask() (in src/hostmask.c) uses strtoul to parse masks, and does not properly validate input, it can segfault on certain input.  This could allow a remote attacker to crash the ircd server.

This has been fixed upstream in version 8.0.6 [2].

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
[2] http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786

Comment 1 Vincent Danen 2013-01-29 21:16:19 UTC

Created ircd-hybrid tracking bugs for this issue

Affects: epel-all [bug 905653]

Comment 3 Vincent Danen 2018-02-02 23:47:57 UTC

According to http://dl.fedoraproject.org/pub/epel/6/SRPMS/Packages/i/ this package is not shipped in EPEL6.  Given it was filed against EPEL5 at that time, closing this.