HackerOne: PNG compression DoS

ztxt: http://www.libpng.org/pub/png/spec/1.1/PNG-Chunks.htmlC.zTXt "zTXT Documentation" tech: http://www.zlib.net/zlibtech.html "zlib technical details" zlibvuln1: http://www.kb.cert.org/vuls/id/680620 zlibvuln2: http://www.kb.cert.org/vuls/id/238678 PNG compression DoS ---------------------...