Authentication Bypass by Alternate Name in Sustainsys.Saml2 - CVE-2023-41890
Published: September 20, 2023
Vulnerability identifier: #VU80923
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-41890
CWE-ID: CWE-289
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Sustainsys.Saml2
Sustainsys.Saml2
Software vendor:
Sustainsys
Sustainsys
Description
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.
Remediation
Install updates from vendor's website.