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libpng "png_set_strip_alpha()" Buffer Overflow Vulnerability
Secunia Advisory: SA18654
Release Date: 2006-02-01
Popularity: 9,600 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:libpng 1.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

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.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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