84372 : Google Chrome PDF Viewer Badly Linked Form Field Tree Use-after-free Issue
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
15	424	10 months ago	15 days ago	3 times	100%

Timeline

Disclosure Date
2012-07-31

Time to Patch
40 days

Description

Google Chrome contains a use-after-free error that is triggered when handling badly linked form field trees. With a specially crafted PDF file, a context-dependent attacker can dereference already freed memory and potentially execute arbitrary code.

Classification

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

Solution

Upgrade to version 21.0.1180.57 or higher for Mac and Linux or 21.0.1180.60 or higher for Windows and Chrome Frame, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Google, Inc.

Chrome

20.0.1132.57

References

CVE ID: 2012-2852 (see also: NVD)
Secunia Advisory ID: 50105 50337
Bugtraq ID: 54749
Related OSVDB ID: 84366 84367 84368 84369 84370 84371 84373 84374 84375 84376 84377 84378 84379 84380
Vendor Specific News/Changelog Entry: http://googlechromereleases.blogspot.com/2012/07/stable-channel-release.html
Vendor Specific Advisory URL: http://www.srware.net/forum/viewtopic.php?f=18&t=4269
https://code.google.com/p/chromium/issues/detail?id=134028

Credit

Alexey Samsonov - Google Inc.

CVSSv2 Score

CVSSv2 Base Score = 6.8
Source: nvd.nist.gov | Generated: 2012-08-07 | Disagree?

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