CVE-2022-23527 MEDIUM

CVE-2022-23527: Open Redirect in oidc_validate_redirect_url()

Vendor Zmartzone
Product mod_auth_openidc
Weakness CWE-601 · Open redirect
Published December 14, 2022
Last update April 18, 2025
View on NVD All CVEs

CVSS base score

4.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 14, 2022 CVE published
April 18, 2025 Record updated