Jenkins SAML Single Sign On(SSO) Plugin 2.3.0 and earlier does not perform a permission check in an HTTP endpoint.

This allows attackers with Overall/Read permission to download a string representation of the current security realm (Java Object#toString()), which potentially includes sensitive information.

SAML Single Sign On(SSO) Plugin 2.3.1 requires Overall/Administer permission to access the affected HTTP endpoint, and only allows downloading a string representation if the current security realm is this plugin’s.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-37945
• https://www.jenkins.io/security/advisory/2023-07-12/#SECURITY-3164
• http://www.openwall.com/lists/oss-security/2023/07/12/2