The design of the W3C XML Signature Syntax and Processing (XMLDsig) recommendation, as implemented in the Sun JDK and JRE 6 Update 14 and earlier uses a parameter that defines an HMAC truncation length (HMACOutputLength) but does not require a minimum for this length. This allows attackers to spoof HMAC-based signatures and bypass authentication by specifying a truncation length with a small number of bits.
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center