Bug 842518 (CVE-2012-4049)

Summary:	CVE-2012-4049 wireshark: Excessive CPU usage in NFS dissector
Product:	[Other] Security Response	Reporter:	Huzaifa S. Sidhpurwala <huzaifas>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	huzaifas, jsafrane, rvokal
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:	2014-04-23 20:48:42 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:	842531
Bug Blocks:	842520

Description Huzaifa S. Sidhpurwala 2012-07-24 05:38:52 UTC

An infinite loop was found in the way NFS dissector of the Wireshark network traffic analyzer processed certain NFS packets. If Wireshark read a malformed packet off a network or opened a malicious packet capture file, it could lead to denial of service (Wireshark hang).

Reference:
http://www.wireshark.org/security/wnpa-sec-2012-12.html

Comment 1 Huzaifa S. Sidhpurwala 2012-07-26 04:42:35 UTC

Though there is no news from upstream about the wrong bug mentioned in their advisory, looking at the commit logs suggests that the issue is actually:

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7209

Comment 2 Huzaifa S. Sidhpurwala 2012-07-26 04:43:49 UTC

Statement:

Not Vulnerable. This issue does not affect the version of wireshark as shipped with Red Hat Enterprise Linux 5 and 6.

Comment 3 Huzaifa S. Sidhpurwala 2012-07-26 04:45:20 UTC

Created wireshark tracking bugs for this issue

Affects: fedora-all [bug 842531]