Bug 673573 (CVE-2011-0520)

Summary:	CVE-2011-0520 MaraDNS: Heap-based buffer overflow by processing long DNS hostname with a large number of labels
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	bressers, jrusnack, mfleming+rpm, vdanen, wnefal+redhatbugzilla
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	maradns 1.3.07.11, maradns 1.4.06	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-10 22:33:06 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	673574
Bug Blocks:

Description Jan Lieskovsky 2011-01-28 19:36:18 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-0520 to
the following vulnerability:

The compress_add_dlabel_points function in dns/Compress.c in MaraDNS
1.4.03, 1.4.05, and probably other versions allows remote attackers to
cause a denial of service (segmentation fault) and possibly execute
arbitrary code via a long DNS hostname with a large number of labels,
which triggers a heap-based buffer overflow.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0520
[2] http://www.openwall.com/lists/oss-security/2011/01/24/1
[3] http://www.openwall.com/lists/oss-security/2011/01/24/6
[4] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834
[5] http://www.securityfocus.com/bid/45966
[6] http://osvdb.org/70630
[7] http://secunia.com/advisories/43027
[8] http://xforce.iss.net/xforce/xfdb/64885

Comment 1 Jan Lieskovsky 2011-01-28 19:40:55 UTC

Was not able to reproduce the issue based on reproducer details:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834#5

on maradns-1.3.07.09-3.fc12.i686 version, but look into the relevant
code part suggest:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834#28

this version is affected, and we should fix it.

Comment 2 Jan Lieskovsky 2011-01-28 19:41:56 UTC

Created maradns tracking bugs for this issue

Affects: fedora-all [bug 673574]

Comment 3 Tomas Hoger 2011-01-30 11:31:07 UTC

Upstream post with more details and the fix:
  http://woodlane.webconquest.com/pipermail/list/2011-January/000784.html

Fixed upstream in versions 1.4.06 and 1.3.07.11.

Comment 4 Vincent Danen 2011-03-18 19:09:28 UTC

*** Bug 688987 has been marked as a duplicate of this bug. ***

Comment 5 Vincent Danen 2012-08-25 17:06:08 UTC

This is still unfixed in Fedora 16, no longer shipped in Fedora 17+.