83254 : WebKit WebGL texSubImage2D Floating-point Texture Upload Handling Memory Corruption
Printer | http://osvdb.org/83254 | Email This | Edit Vulnerability

Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
4 678 almost 2 years ago about 1 year ago 4 times 100%

Timeline

Disclosure Date
2012-06-26
Time to Patch
89 days

Description

WebKit contains a flaw in the WebGL subsystem as WebCore::GraphicsContext3D::getImageData [platform/graphics/cairo/GraphicsContext3DCairo.cpp, platform/graphics/cg/GraphicsContext3DCG.cpp, platform/graphics/qt/GraphicsContext3DQt.cpp, platform/graphics/skia/GraphicsContext3DSkia.cpp] incorrectly calculates the size of a destination buffer. The issue is triggered when the texSubImage2d implementation does not properly handle uploads to floating-point textures. With a specially crafted web page, a context-dependent attacker can corrupt memory to cause a denial of service or potentially execute arbitrary code.

Classification

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

Solution

Upgrade to version 1.8.2 and 1.9.3, or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Upgrade to Google Chrome version 20.0.1132.43 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
19.0.1084.56
The WebKitGTK+ Team
WebKitGTK+
1.8.1
1.9.2

References

Credit

CVSSv2 Score

CVSSv2 Base Score = 6.8
Source: nvd.nist.gov | Generated: 2012-06-27 | Disagree?

Access_vector_2 Access_complexity_1 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1

Comments

No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

© Copyright 2002 - 2014 Open Sourced Vulnerability Database (OSVDB), All Rights Reserved.
License - Privacy Statement - Terms of Use