MSIE PNG zlib API misuse bug DoS

2014.08.05
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

Heh, look at windowscodecs!SPNGREAD::CbReadBytes. It doesn't handle Z_NEED_DICT so infinite loop in IE. Via @lcamtuf http://lcamtuf.coredump.cx/000082-000000-ck.png

References:

http://lcamtuf.coredump.cx/000082-000000-ck.png
https://twitter.com/taviso/status/484032144801398784
http://lcamtuf.blogspot.nl/2014/08/a-bit-more-about-american-fuzzy-lop.html


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