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.
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