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ALSA-2022:1823 — Moderate: mod_auth_openidc:2.3 security update

Affected: AlmaLinux:8: cjose, AlmaLinux:8: cjose-devel, AlmaLinux:8: mod_auth_openidc

The mod_auth_openidc is an OpenID Connect authentication module for Apache HTTP Server. It enables an Apache HTTP Server to operate as an OpenID Connect Relying Party and/or OAuth 2.0 Resource Server.

Security Fix(es):

* mod_auth_openidc: open redirect in oidc_validate_redirect_url() (CVE-2021-32786)

* mod_auth_openidc: hardcoded static IV and AAD with a reused key in AES GCM encryption (CVE-2021-32791)

* mod_auth_openidc: XSS when using OIDCPreservePost On (CVE-2021-32792)

* mod_auth_openidc: open redirect due to target_link_uri parameter not validated (CVE-2021-39191)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

EUVD-2026-30514

fkie_cve-2021-39191

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 2.4.9.4, the 3rd-party init SSO functionality of mod_auth_openidc was reported to be vulnerable to an open redirect attack by supplying a crafted URL in the `target_link_uri` parameter. A patch in version 2.4.9.4 made it so that the `OIDCRedirectURLsAllowed` setting must be applied to the `target_link_uri` parameter. There are no known workarounds aside from upgrading to a patched version.

gsd-2021-39191

msrc_CVE-2021-39191 — URL Redirection to Untrusted Site ('Open Redirect') in mod_auth_openidc

msrc_CVE-2021-39191

RHSA-2022:1823 — Red Hat Security Advisory: mod_auth_openidc:2.3 security update

mod_auth_openidc: open redirect in oidc_validate_redirect_url() mod_auth_openidc: hardcoded static IV and AAD with a reused key in AES GCM encryption mod_auth_openidc: XSS when using OIDCPreservePost On mod_auth_openidc: open redirect due to target_link_uri parameter not validated

SUSE-SU-2021:3352-1 — Security update for apache2-mod_auth_openidc

Security update for apache2-mod_auth_openidc

UBUNTU-CVE-2021-39191

Affected: Ubuntu:18.04:LTS: libapache2-mod-auth-openidc, Ubuntu:20.04:LTS: libapache2-mod-auth-openidc

WID-SEC-W-2023-0580 — Red Hat Enterprise Linux (mod_auth_openidc): Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um falsche Informationen darzustellen, vertrauliche Informationen offenzulegen und einen Cross-Site-Scripting Angriff durchzuführen.