Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openidc | Mod Auth Openidc | < 2.4.12.2 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://github.com/zmartzone/mod_auth_openidc/blob/v2.4.12.1/auth_openidc.conf#LProduct
- https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-q6f2-285mVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00020.htmlMailing List
- https://github.com/zmartzone/mod_auth_openidc/blob/v2.4.12.1/auth_openidc.conf#LProduct
- https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-q6f2-285mVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00020.htmlMailing List
FAQ
What is CVE-2022-23527?
CVE-2022-23527 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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 par...
How severe is CVE-2022-23527?
CVE-2022-23527 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-23527?
Check the references section above for vendor advisories and patch information. Affected products include: Openidc Mod Auth Openidc, Debian Debian Linux.