The Forms Authentication feature in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 allows remote authenticated users to obtain access to arbitrary user accounts via a crafted username, aka "ASP.Net Forms Authentication Bypass Vulnerability."
Publish Date : 2011-12-29 Last Update Date : 2013-01-29
(There is total information disclosure, resulting in all system files being revealed.)
(There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
(There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
(The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
(The vulnerability requires an attacker to be logged into the system (such as at a command line or via a desktop session or web interface).)
Bypass a restriction or similar
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify
a vulnerability or a missing patch. Check out the OVAL definitions
if you want to learn what you should do to verify a vulnerability.