Revive Adserver 3.0.5 Cross Site Scripting / Denial Of Service

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Revive Adserver Security Advisory REVIVE-SA-2014-002  
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http://www.revive-adserver.com/security/revive-sa-2014-002  
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CVE-IDs: CVE-2014-8793, CVE-2014-8875  
Date: 2014-12-17  
Risk Level: Medium  
Applications affected: Revive Adserver  
Versions affected: <= 3.0.5  
Versions not affected: >= 3.0.6, >= 3.1.0  
Website: http://www.revive-adserver.com/  
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Vulnerability 1 - Denial of Service  
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Vulnerability Type: XML Entity Expansion [CWE-776]  
CVE-ID: CVE-2014-8875  
CVSSv2 Base Score: 5 (AV:N/AC:L/Au:N/C:N/I:N/A:P)  
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Description  
-----------  
Similar vulnerabilities have been discovered and reported earlier in   
2014 for other PHP applications, i.e. Drupal and WordPress. It has been   
discovered that the Revive Adserver’s XML-RPC implementation might be   
vulnerable to the same kind of attacks.  
  
A remote attacker can send specifically crafted payloads to the XML-RPC   
endpoints of a Revive Adserver instance in an attempt to consume the   
server resources (CPU and memory) and ultimately lead to the application   
becoming unavailable or unresponsive (denial of service).  
  
  
Details  
-------  
Revive Adserver XML-RPC servers, available both in the delivery engine   
(/www/delivery/[ad]xmlrpc.php, /adxmlrpc.php) and the API endpoints   
(/www/api/v2/xmlrpc/, /www/api/v1/xmlrpc/*.php) might be vulnerable to   
certain types of XML entity expansion attacks, also depending on the   
libxml2 version available on the system.  
  
  
References  
----------  
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8875  
http://cwe.mitre.org/data/definitions/776.html  
https://github.com/revive-adserver/revive-adserver/commit/0559d00  
https://wordpress.org/news/2014/08/wordpress-3-9-2/  
https://www.drupal.org/SA-CORE-2014-004  
  
  
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Vulnerability 2 - XSS  
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Vulnerability Type: Cross-Site Scripting [CWE-79]  
CVE-ID: CVE-2014-8793  
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)  
Also known as: HTB23242  
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Description  
-----------  
A Cross-Site Scripting vulnerability was recently discovered and   
reported by High-Tech Bridge Security Research Lab (   
https://www.htbridge.com/ ).  
  
A remote attacker can trick logged-in user to open a specially crafted   
link and execute arbitrary HTML and script code in browser in context of   
the vulnerable website.  
  
  
Details  
-------  
Input passed via the "refresh_page" GET parameter to   
"/www/admin/report-generate.php" script is not properly sanitised before   
being returned to the user.  
  
Please see High-Tech Bridge's own advisory for more information.  
  
  
References  
----------  
https://www.htbridge.com/advisory/HTB23242  
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8793  
http://cwe.mitre.org/data/definitions/79.html  
https://github.com/revive-adserver/revive-adserver/commit/2be73f9  
  
  
  
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Solution  
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We strongly advise people to upgrade to the most recent 3.1.0 or 3.0.6   
versions of Revive Adserver, including those running OpenX Source or   
older versions of the application.  
  
  
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Contact Information  
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The security contact for Revive Adserver can be reached at:  
<security AT revive-adserver DOT com>.  
  
Please review http://www.revive-adserver.com/security/ before doing so.  
  
  
--   
Matteo Beccati  
On behalf of the Revive Adserver Team  
http://www.revive-adserver.com/  
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