McAfee Firewall Reporter GeneralUtilities.pm isValidClient Authentication Bypass VulnerabilityZDI-11-117: April 11th, 2011
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10522. For further product information on the TippingPoint IPS:
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of McAfee Firewall Reporter. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the code responsible for authenticating users. The GernalUtilities.pm file contains code to validate sessions by parsing cookie values without sanitization. The faulty logic simply checks for the existence of a particular file, without verifying its contents. By using a directory traversal technique an attacker can point the cgisess cookie value to an arbitrary file that exists on the server and thus bypass authentication.
Vendor ResponseMcAfee states:
Fixed February 9, 2011
Bulletin modified April 11, 2011:
2010-09-22 - Vulnerability reported to vendor
2011-04-11 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Andrea Micalizzi aka rgod