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`.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-7316:01 advisory.

    * mod_auth_openidc: Open Redirect in oidc_validate_redirect_url() using tab character (CVE-2022-23527)
      * mod_auth_openidc: NULL pointer dereference when OIDCStripCookies is set and a crafted Cookie header is     supplied (CVE-2023-28625)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2023-6773:01 advisory.

    * mod_auth_openidc: Open Redirect in oidc_validate_redirect_url() using tab character (CVE-2022-23527)
      * mod_auth_openidc: NULL pointer dereference when OIDCStripCookies is set and a crafted Cookie header is     supplied (CVE-2023-28625)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:4532-1 advisory.

    - Update to 2.4.17.1 (bsc#1248806 / PED-14130).
    - Remove many patches, as they've been merged upstream.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0264 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2022-23527:
    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.

    CVE-2023-28625:
    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-2024-24814:
    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. 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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2023:0283 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2022-23527:
      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.

      CVE-2023-28625:
      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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0080 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2022-23527:
    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.

    CVE-2023-28625:
    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`.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-6940 advisory.

    - CVE-2023-37464 cjose: AES GCM decryption uses the Tag length from the actual       Authentication Tag provided in the JWE       Resolves: rhbz#2223308

    mod_auth_openidc     Related: rhbz#2141850 - fix cjose version dependency

    Resolves: rhbz#2141850 - auth_openidc.conf mode 0640 by default
    - Resolves: rhbz#2184144 - CVE-2023-28625 NULL pointer dereference           when OIDCStripCookies is set and a crafted Cookie header is supplied

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2023-6365 advisory.

    - Resolves: rhbz#2184145 - CVE-2023-28625 NULL pointer dereference       when OIDCStripCookies is set and a crafted Cookie header is supplied

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:6940 advisory.

    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() using tab character (CVE-2022-23527)

    * mod_auth_openidc: NULL pointer dereference when OIDCStripCookies is set and a crafted Cookie header is     supplied (CVE-2023-28625)

    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 Red Hat Enterprise Linux 8.9 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:6365 advisory.

    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() using tab character (CVE-2022-23527)

    * mod_auth_openidc: NULL pointer dereference when OIDCStripCookies is set and a crafted Cookie header is     supplied (CVE-2023-28625)

    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 Red Hat Enterprise Linux 9.3 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-b534ca7056 advisory.

    Rebase to 2.4.13.2 version, fix CVE-2023-28625

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dsa-5405 advisory.

    It was discovered that missing input sanitising in the implementation of the OIDCStripCookie option in     mod_auth_openidc could result in denial of service. For the stable distribution (bullseye), this problem     has been fixed in version 2.4.9.4-0+deb11u3. We recommend that you upgrade your libapache2-mod-auth-     openidc packages. For the detailed security status of libapache2-mod-auth-openidc please refer to its     security tracker page at: https://security-tracker.debian.org/tracker/libapache2-mod-auth-openidc

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-3409 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3409-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     April 30, 2023                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : libapache2-mod-auth-openidc     Version        : 2.3.10.2-1+deb10u2     CVE ID         : CVE-2019-20479 CVE-2021-32785 CVE-2021-32786 CVE-2021-32791                      CVE-2021-32792 CVE-2023-28625     Debian Bug     : 991580 991581 991582 991583 1033916

    Several vulnerabilities were fixed in libapache2-mod-auth-openidc,     an OpenID Connect Relying Party implementation for Apache.

    CVE-2019-20479

        Insufficient validatation of URLs beginning with a slash and backslash.

    CVE-2021-32785

        Crash when using an unencrypted Redis cache.

    CVE-2021-32786

        Open Redirect vulnerability in the logout functionality.

    CVE-2021-32791

        AES GCM encryption in used static IV and AAD.

    CVE-2021-32792

        XSS vulnerability when using OIDCPreservePost.

    CVE-2023-28625

        NULL pointer dereference with OIDCStripCookies.

    For Debian 10 buster, these problems have been fixed in version     2.3.10.2-1+deb10u2.

    We recommend that you upgrade your libapache2-mod-auth-openidc packages.

    For the detailed security status of libapache2-mod-auth-openidc please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libapache2-mod-auth-openidc

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2023:1849-1 advisory.

    - CVE-2023-28625: Fixed NULL pointer dereference when OIDCStripCookies was set and a crafted Cookie header     was supplied (bsc#1210073).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
293598	MiracleLinux 8 : mod_auth_openidc:2.3 (AXSA:2023-7316:01)	Nessus	Miracle Linux Local Security Checks	Local	medium
291870	MiracleLinux 9 : mod_auth_openidc-2.4.9.4-4.el9 (AXSA:2023-6773:01)	Nessus	Miracle Linux Local Security Checks	Local	medium
280142	SUSE SLES15 / openSUSE 15 Security Update : apache2-mod_auth_openidc (SUSE-SU-2025:4532-1)	Nessus	SuSE Local Security Checks	Local	high
252872	Linux Distros Unpatched Vulnerability : CVE-2023-28625	Nessus	Misc.	Local	high
238625	TencentOS Server 4: mod_auth_openidc (TSSA-2024:0264)	Nessus	Tencent Local Security Checks	Local	medium
238506	TencentOS Server 3: mod_auth_openidc:2.3 (TSSA-2023:0283)	Nessus	Tencent Local Security Checks	Local	medium
236248	Alibaba Cloud Linux 3 : 0080: mod_auth_openidc:2.3 (ALINUX3-SA-2024:0080)	Nessus	Alibaba Cloud Linux Local Security Checks	Local	medium
186092	Oracle Linux 8 : mod_auth_openidc:2.3 (ELSA-2023-6940)	Nessus	Oracle Linux Local Security Checks	Local	medium
185822	Oracle Linux 9 : mod_auth_openidc (ELSA-2023-6365)	Nessus	Oracle Linux Local Security Checks	Local	medium
185656	RHEL 8 : mod_auth_openidc:2.3 (RHSA-2023:6940)	Nessus	Red Hat Local Security Checks	Local	medium
185112	RHEL 9 : mod_auth_openidc (RHSA-2023:6365)	Nessus	Red Hat Local Security Checks	Local	medium
176526	Fedora 38 : mod_auth_openidc (2023-b534ca7056)	Nessus	Fedora Local Security Checks	Local	high
176076	Debian DSA-5405-1 : libapache2-mod-auth-openidc - security update	Nessus	Debian Local Security Checks	Local	high
174970	Debian dla-3409 : libapache2-mod-auth-openidc - security update	Nessus	Debian Local Security Checks	Local	medium
174376	SUSE SLES15 / openSUSE 15 Security Update : apache2-mod_auth_openidc (SUSE-SU-2023:1849-1)	Nessus	SuSE Local Security Checks	Local	high

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