A vulnerability has been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the "png_handle_tRNS" function in pngrutil.c. This can be exploited by tricking an application using the library to process a specially crafted PNG file containing a malformed tRNS chunk.
The vulnerability is reported in versions 0.90 through 1.2.16.
Solution: Update to version 1.0.25 or 1.2.17.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: http://kent.dl.sourceforge.net/sourceforge/libpng/libpng-1.2.17-ADVISORY.txt
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Subject: libpng tRNS Chunk Denial of Service
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