This security bulletin contains one high risk vulnerability.
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to insufficient identity provider issuer validation. A remote attacker can craft a Saml2 response that is processed as if issued by another identity provider or cause stored state intended for one identity provider to be used when processing the response from another provider.Mitigation
Install updates from vendor's website.Vulnerable software versions
Sustainsys.Saml2: 1.0.0 - 2.9.1Fixed software versions
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?