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Insecure Library Loading
Moderately critical

libpng "png_set_strip_alpha()" Buffer Overflow Vulnerability

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Release Date:  2006-02-01    Views:  14,288

Secunia Advisory SA18654

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) against applications using libpng or potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the "png_set_strip_alpha()" function within the handling of a PNG image file containing alpha channels. This can be exploited to cause a heap-based buffer overflow via a specially-crafted PNG file.

Successful exploitation requires that the application is written to strip the alpha channel from a PNG file.

The vulnerability has been reported in versions 1.0.16, 1.0.17, 1.2.6, and 1.2.7.


Solution:
Update to version 1.0.18 or 1.2.8.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Reported by vendor.

Original Advisory:
Red Hat Bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=179455

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 "png_set_strip_alpha()" Buffer Overflow Vulnerability

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