Revive Adserver Security Advisory REVIVE-SA-2014-002
- Advisory ID: REVIVE-SA-2014-002
- 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/
Vulnerability 1 – Denial of Service
- 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)
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).
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.
Vulnerability 2 – XSS
- 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
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.
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.
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.
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.