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Insecure Library Loading
Moderately critical

libpng Uninitialised Pointer Arrays Vulnerability

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Release Date:  2009-02-19    Last Update:  2009-03-03    Views:  8,232

Secunia Advisory SA33970

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A vulnerability has been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service) or to potentially compromise an application using the library.

The vulnerability is caused due to the library improperly initialising certain pointer arrays prior to freeing array elements in case the application runs out of memory. This can potentially be exploited to cause a memory corruption via a specially crafted PNG file.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is reported in versions prior to 1.0.43 and 1.2.35.


Solution:
Update to version 1.0.43 or 1.2.35.

Provided and/or discovered by:
The vendor credits Tavis Ormandy.

Original Advisory:
http://sourceforge.net/mailarchive/message.php?msg_name=e56ccc8f0902181726i200f4bf0n20d919473ec409b7%40mail.gmail.com

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: libpng Uninitialised Pointer Arrays Vulnerability

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