Oracle Linux: CVE-2022-23527: ELSA-2023-6940: mod_auth_openidc:2.3 security and bug fix update (MODERATE) (Multiple Advisories)

mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.
An open redirect vulnerability was found in mod_auth_openidc, an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect.