F5 BIG-IP Management Interface Perl Injection
F5 BIG-IP Management Interface Perl Injection
Product: F5 BIG-IP
http://www.f5.com/products/big-ip/
The F5 BIG-IP reconfiguration facility, used by both the web management
interface and the CLI, suffers from insufficient input validation and/or
sanitization of certain reconfiguration requests. It is possible for a
logged-in user with Resource Manager or Administrator privileges to inject
arbitrary Perl code, including spawning Unix shell commands, that gets
immediately executed with root privileges. (For the Administrator role this
does not provide any new privileges because it is already provided with full
shell access as root.)
The core of the problem is using Perl EP3 with templates containing
substitutions similar to
$val='NEW_VALUE';
without first escaping single quotes in NEW_VALUE;
As an example, the SNMP community string configuration accepts the following
value as an allowed source of SNMP requests:
"none'.`touch /etc/foo`.'"
It is possible to craft URL links that would inject the code with a simple HTTP
GET request. Cross-site attacks may leverage this vulnerability to make an
arbitrary change to the BIG-IP appliance.
The vulnerability has been identified in version 9.4.3. However, other versions
may be also affected.
Found by:
nnposter