Yaws Directory Traversal Vulnerability


Description   A vulnerability has been discovered in Yaws, which can be exploited by malicious people to disclose sensitive information.
Input passed via the URL is not properly verified before being used to read files. This can be exploited to read arbitrary files via directory traversal attacks.
The vulnerability is confirmed in versions 1.89 and 1.91. Other versions may also be affected.
     
Vulnerable Products   Vulnerable Software:
Yaws 1.x
     
Solution   Use a proxy to filter malicious requests.
     
CVE   CVE-2011-4350
CVE-2010-4181
     
References   Yaws:
https://github.com/klacke/yaws/issues/69
Alejandro Hernandez H:
http://www.exploit-db.com/exploits/15371/
     
Vulnerability Manager Detection   No
     
IPS Protection  
ASQ Engine alarm Available Since
Misc : Directory traversal - parameter starting with ../
3.2.0
Directory traversal using ..\..
3.2.0
Directory traversal
3.2.0
Directory traversal backward root folder
3.2.0
     


 
 
 
 
 Risk level 
Moderate 

 Vulnerability First Public Report Date 
2010-11-01 

 Target Type 
Server 

 Possible exploit 
Remote