mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In versions prior to 2.4.9, `oidc_validate_redirect_url()` does not parse URLs the same way as most browsers do. As a result, this function can be bypassed and leads to an Open Redirect vulnerability in the logout functionality. This bug has been fixed in version 2.4.9 by replacing any backslash of the URL to redirect with slashes to address a particular breaking change between the different specifications (RFC2396 / RFC3986 and WHATWG). As a workaround, this vulnerability can be mitigated by configuring `mod_auth_openidc` to only allow redirection whose destination matches a given regular expression.
References
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-07-22T00:00:00
Updated: 2023-04-30T00:00:00
Reserved: 2021-05-12T00:00:00
Link: CVE-2021-32786
JSON object: View
NVD Information
Status : Modified
Published: 2021-07-22T22:15:08.233
Modified: 2023-11-07T03:35:27.807
Link: CVE-2021-32786
JSON object: View
Redhat Information
No data.
CWE