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libpng "png_set_strip_alpha()" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA18654
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Release Date:
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2006-02-01
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Popularity:
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8,371 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | libpng 1.x
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| CVE reference: | CVE-2006-0481
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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.
http://www.libpng.org/pub/png/libpng.html
Provided and/or discovered by:
Reported by vendor.
Original Advisory:
Red Hat Bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=179455
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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