Tavis Ormandy has reported a vulnerability in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an out-of-bounds read error in the "png_set_sPLT()" function in pngset.c. This can be exploited by tricking an application using the library to process a specially crafted PNG file.
The vulnerability is reported in version 1.2.12. Other versions may also be affected.
Solution: Update to version 1.2.13.
Provided and/or discovered by: Tavis Ormandy, Gentoo Linux Security Auditing Team.
Original Advisory: http://bugs.gentoo.org/show_bug.cgi?id=154380
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Subject: libpng sPLT Chunk Handling Denial of Service
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