79799 : WebKit 'TextIterator::handleTextNodeFirstLetter' first-letter Selector Out-of-bounds Read Memory Disclosure
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	741	over 1 year ago	4 months ago	11 times	100%

Timeline

Disclosure Date
2012-03-05

Description

WebKit contains an out-of-bounds read flaw in the 'TextIterator::handleTextNodeFirstLetter' function [WebCore/editing/TextIterator.cpp] that is triggered when handling text with a :first-letter selector. With a specially crafted web page, a context-dependent attacker can cause a browser crash and potentially disclose memory.

Classification

Location: Context Dependent
Attack Type: Input Manipulation
Impact: Loss of Confidentiality
Solution: Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified, Coordinated Disclosure
OSVDB: Web Related

Solution

It has been reported that this issue has been fixed. Upgrade to version 1.8.0 or higher to address this vulnerability.

Upgrade to Google Chrome version 17.0.963.65 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Google, Inc.

Chrome

17.0.963.56

The WebKitGTK+ Team

WebKitGTK+

1.6.x

Apple Inc.	Safari	5.1.7
	iOS for iPhone	5.1.1
	iOS for iPod touch	5.1.1
	iOS for iPad	5.1.1

References

Security Tracker: 1026759
CVE ID: 2011-3040 (see also: NVD)
Secunia Advisory ID: 48265 48419 48527 50058 50586 50618
Bugtraq ID: 52271
Related OSVDB ID: 79790 79791 79792 79793 79794 79795 79796 79797 79798 79800 79801 79802 79803
Vendor Specific News/Changelog Entry: http://googlechromereleases.blogspot.com/2012/03/chrome-stable-update.html
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00012.html
http://www.gentoo.org/security/en/glsa/glsa-201203-19.xml
https://bugs.webkit.org/show_bug.cgi?id=78530 [ Auth Req'd ]
Mail List Post: http://lists.apple.com/archives/security-announce/2012/Jul/msg00000.html
Vendor Specific Advisory URL: http://lists.apple.com/archives/security-announce/2012/Sep/msg00001.html
http://support.apple.com/kb/HT5400
http://support.apple.com/kb/HT5503
https://code.google.com/p/chromium/issues/detail?id=114054 [ Auth Req'd ]
Vendor Specific Solution URL: http://trac.webkit.org/changeset/108417
http://trac.webkit.org/changeset/109385
https://chromiumcodereview.appspot.com/9566023

Credit

miaubiz

CVSSv2 Score

CVSSv2 Base Score = 4.3
Source: nvd.nist.gov | Generated: 2012-03-06 | Disagree? | There are 1 more: View All

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