Security update for apache2-mod_auth_openidc SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:4532-1 Final 1 1 2025-12-29T13:53:59Z current 2025-12-29T13:53:59Z 2025-12-29T13:53:59Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for apache2-mod_auth_openidc This update for apache2-mod_auth_openidc fixes the following issues: - Update to 2.4.17.1 (bsc#1248806 / PED-14130). - Remove many patches, as they've been merged upstream. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-4532,SUSE-SLE-Module-Server-Applications-15-SP6-2025-4532,SUSE-SLE-Module-Server-Applications-15-SP7-2025-4532,openSUSE-SLE-15.6-2025-4532 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ Link for SUSE-SU-2025:4532-1 https://lists.suse.com/pipermail/sle-security-updates/2025-December/023659.html E-Mail link for SUSE-SU-2025:4532-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1248806 SUSE Bug 1248806 https://www.suse.com/security/cve/CVE-2019-14857/ SUSE CVE CVE-2019-14857 page https://www.suse.com/security/cve/CVE-2019-20479/ SUSE CVE CVE-2019-20479 page https://www.suse.com/security/cve/CVE-2021-32785/ SUSE CVE CVE-2021-32785 page https://www.suse.com/security/cve/CVE-2021-32786/ SUSE CVE CVE-2021-32786 page https://www.suse.com/security/cve/CVE-2021-32791/ SUSE CVE CVE-2021-32791 page https://www.suse.com/security/cve/CVE-2021-32792/ SUSE CVE CVE-2021-32792 page https://www.suse.com/security/cve/CVE-2021-39191/ SUSE CVE CVE-2021-39191 page https://www.suse.com/security/cve/CVE-2022-23527/ SUSE CVE CVE-2022-23527 page https://www.suse.com/security/cve/CVE-2023-28625/ SUSE CVE CVE-2023-28625 page https://www.suse.com/security/cve/CVE-2024-24814/ SUSE CVE CVE-2024-24814 page https://www.suse.com/security/cve/CVE-2025-31492/ SUSE CVE CVE-2025-31492 page https://www.suse.com/security/cve/CVE-2025-3891/ SUSE CVE CVE-2025-3891 page SUSE Linux Enterprise Module for Server Applications 15 SP6 SUSE Linux Enterprise Module for Server Applications 15 SP7 openSUSE Leap 15.6 apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 as a component of SUSE Linux Enterprise Module for Server Applications 15 SP6 apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 as a component of openSUSE Leap 15.6 A flaw was found in mod_auth_openidc before version 2.4.0.1. An open redirect issue exists in URLs with trailing slashes similar to CVE-2019-3877 in mod_auth_mellon. CVE-2019-14857 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2019-14857.html CVE-2019-14857 https://bugzilla.suse.com/1153666 SUSE Bug 1153666 A flaw was found in mod_auth_openidc before version 2.4.1. An open redirect issue exists in URLs with a slash and backslash at the beginning. CVE-2019-20479 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2019-20479.html CVE-2019-20479 https://bugzilla.suse.com/1164459 SUSE Bug 1164459 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. When mod_auth_openidc versions prior to 2.4.9 are configured to use an unencrypted Redis cache (`OIDCCacheEncrypt off`, `OIDCSessionType server-cache`, `OIDCCacheType redis`), `mod_auth_openidc` wrongly performed argument interpolation before passing Redis requests to `hiredis`, which would perform it again and lead to an uncontrolled format string bug. Initial assessment shows that this bug does not appear to allow gaining arbitrary code execution, but can reliably provoke a denial of service by repeatedly crashing the Apache workers. This bug has been corrected in version 2.4.9 by performing argument interpolation only once, using the `hiredis` API. As a workaround, this vulnerability can be mitigated by setting `OIDCCacheEncrypt` to `on`, as cache keys are cryptographically hashed before use when this option is enabled. CVE-2021-32785 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2021-32785.html CVE-2021-32785 https://bugzilla.suse.com/1188638 SUSE Bug 1188638 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. CVE-2021-32786 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2021-32786.html CVE-2021-32786 https://bugzilla.suse.com/1188639 SUSE Bug 1188639 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 mod_auth_openidc before version 2.4.9, the AES GCM encryption in mod_auth_openidc uses a static IV and AAD. It is important to fix because this creates a static nonce and since aes-gcm is a stream cipher, this can lead to known cryptographic issues, since the same key is being reused. From 2.4.9 onwards this has been patched to use dynamic values through usage of cjose AES encryption routines. CVE-2021-32791 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2021-32791.html CVE-2021-32791 https://bugzilla.suse.com/1188849 SUSE Bug 1188849 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 mod_auth_openidc before version 2.4.9, there is an XSS vulnerability in when using `OIDCPreservePost On`. CVE-2021-32792 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2021-32792.html CVE-2021-32792 https://bugzilla.suse.com/1188848 SUSE Bug 1188848 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. CVE-2021-39191 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2021-39191.html CVE-2021-39191 https://bugzilla.suse.com/1190223 SUSE Bug 1190223 mod_auth_openidc is an OpenID Certified(tm) 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. CVE-2022-23527 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2022-23527.html CVE-2022-23527 https://bugzilla.suse.com/1206441 SUSE Bug 1206441 mod_auth_openidc is an authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. In versions 2.0.0 through 2.4.13.1, when `OIDCStripCookies` is set and a crafted cookie supplied, a NULL pointer dereference would occur, resulting in a segmentation fault. This could be used in a Denial-of-Service attack and thus presents an availability risk. Version 2.4.13.2 contains a patch for this issue. As a workaround, avoid using `OIDCStripCookies`. CVE-2023-28625 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2023-28625.html CVE-2023-28625 https://bugzilla.suse.com/1210073 SUSE Bug 1210073 mod_auth_openidc is an OpenID Certified(tm) authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. In affected versions missing input validation on mod_auth_openidc_session_chunks cookie value makes the server vulnerable to a denial of service (DoS) attack. An internal security audit has been conducted and the reviewers found that if they manipulated the value of the mod_auth_openidc_session_chunks cookie to a very large integer, like 99999999, the server struggles with the request for a long time and finally gets back with a 500 error. Making a few requests of this kind caused our server to become unresponsive. Attackers can craft requests that would make the server work very hard (and possibly become unresponsive) and/or crash with minimal effort. This issue has been addressed in version 2.4.15.2. Users are advised to upgrade. There are no known workarounds for this vulnerability. CVE-2024-24814 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2024-24814.html CVE-2024-24814 https://bugzilla.suse.com/1219911 SUSE Bug 1219911 mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior to 2.4.16.11, a bug in a mod_auth_openidc results in disclosure of protected content to unauthenticated users. The conditions for disclosure are an OIDCProviderAuthRequestMethod POST, a valid account, and there mustn't be any application-level gateway (or load balancer etc) protecting the server. When you request a protected resource, the response includes the HTTP status, the HTTP headers, the intended response (the self-submitting form), and the protected resource (with no headers). This is an example of a request for a protected resource, including all the data returned. In the case where mod_auth_openidc returns a form, it has to return OK from check_userid so as not to go down the error path in httpd. This means httpd will try to issue the protected resource. oidc_content_handler is called early, which has the opportunity to prevent the normal output being issued by httpd. oidc_content_handler has a number of checks for when it intervenes, but it doesn't check for this case, so the handler returns DECLINED. Consequently, httpd appends the protected content to the response. The issue has been patched in mod_auth_openidc versions >= 2.4.16.11. CVE-2025-31492 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2025-31492.html CVE-2025-31492 https://bugzilla.suse.com/1240893 SUSE Bug 1240893 A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability. CVE-2025-3891 SUSE Linux Enterprise Module for Server Applications 15 SP6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 SUSE Linux Enterprise Module for Server Applications 15 SP7:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 openSUSE Leap 15.6:apache2-mod_auth_openidc-2.4.17.1-150600.16.14.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254532-1/ https://www.suse.com/security/cve/CVE-2025-3891.html CVE-2025-3891 https://bugzilla.suse.com/1242015 SUSE Bug 1242015