Open Redirect Affecting libapache2-mod-auth-openidc package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.91% (56th percentile)

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  • Snyk IDSNYK-UBUNTU2004-LIBAPACHE2MODAUTHOPENIDC-3173310
  • published15 Apr 2025
  • disclosed14 Dec 2022

Introduced: 14 Dec 2022

CVE-2022-23527  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 libapache2-mod-auth-openidc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libapache2-mod-auth-openidc package and not the libapache2-mod-auth-openidc package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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 Base Scores

version 3.1