VUPEN Security Research - Apple Safari Text Nodes Remote Use-after-free Vulnerability (CVE-2011-1344)

2011-04-1900:00:00

vulners.com

JSON

VUPEN Security Research - Apple Safari Text Nodes Remote Use-after-free
Vulnerability (CVE-2011-1344)

http://www.vupen.com/english/research.php

I. BACKGROUND

"Apple Safari is a web browser developed by Apple. As of February 2010,
Safari was the fourth most widely used browser, with 4.45% of the
worldwide usage share of web browsers according to Net Application."

II. DESCRIPTION

VUPEN Vulnerability Research Team discovered a critical vulnerability
in Apple Safari.

The vulnerability is caused by a use-after-free error in the WebKit
library when processing certain text nodes, which could be exploited by
remote attackers to execute arbitrary code by tricking a user into
visiting a specially crafted web page.

CVSS Score: 10 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

III. AFFECTED PRODUCTS

Apple Safari version 5.0.4 and prior for Windows and Mac OS X
Apple iOS versions 3.0 through 4.3.1 for iPhone 3GS and later
Apple iOS versions 3.1 through 4.3.1 for iPod touch (3rd generation) and
later
Apple iOS versions 3.2 through 4.3.1 for iPad
Apple iOS versions 4.2.5 through 4.2.6 for iPhone 4 (CDMA)

IV. Binary Analysis & Exploits/PoCs

In-depth binary analysis of the vulnerability and a code execution exploit
are available through the VUPEN Binary Analysis & Exploits Service :

http://www.vupen.com/english/services/ba-index.php

V. VUPEN Threat Protection Program

To proactively protect critical networks and infrastructures against
unpatched
vulnerabilities and reduce risks related to zero-day attacks, VUPEN shares
its
vulnerability research with governments and organizations members of the
VUPEN
Threat Protection Program (TPP).

VUPEN TPP customers receive fully detailed and technical reports about
security
vulnerabilities discovered by VUPEN and in advance of their public
disclosure.

http://www.vupen.com/english/services/tpp-index.php

VI. SOLUTION

Upgrade to Apple Safari version 5.0.5 for Windows and Mac OS X.

Upgrade to Apple iOS version 4.3.2 for iPhone, iPod, and iPad.

Upgrade to Apple iOS version 4.2.7 for iPhone 4 (CDMA).

VII. CREDIT

This vulnerability was discovered by Matthieu Bonetti of VUPEN Security

VIII. ABOUT VUPEN Security

VUPEN is a leading IT security research company providing vulnerability
management and security intelligence solutions which enable enterprises
and institutions to eliminate vulnerabilities before they can be exploited,
ensure security policy compliance and meaningfully measure and manage risks.

Governmental and federal agencies, and global enterprises in the financial
services, insurance, manufacturing and technology industries rely on VUPEN
to improve their security, prioritize resources, cut time and costs, and
stay ahead of the latest threats.