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

  - 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-2022-23527)

  - 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 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.

  - 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)

  - 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-2022-23527)

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.

  - 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)

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.

  - 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)

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.

  - 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 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.

  - 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 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.

  - 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)

  - 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)

  - 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)

  - 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)

  - 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)

  - 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 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.

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

ID	Name	Product	Family	Severity
186092	Oracle Linux 8 : mod_auth_openidc:2.3 (ELSA-2023-6940)	Nessus	Oracle Linux Local Security Checks	medium
185822	Oracle Linux 9 : mod_auth_openidc (ELSA-2023-6365)	Nessus	Oracle Linux Local Security Checks	medium
185656	RHEL 8 : mod_auth_openidc:2.3 (RHSA-2023:6940)	Nessus	Red Hat Local Security Checks	medium
185112	RHEL 9 : mod_auth_openidc (RHSA-2023:6365)	Nessus	Red Hat Local Security Checks	medium
176526	Fedora 38 : mod_auth_openidc (2023-b534ca7056)	Nessus	Fedora Local Security Checks	high
176076	Debian DSA-5405-1 : libapache2-mod-auth-openidc - security update	Nessus	Debian Local Security Checks	high
174970	Debian DLA-3409-1 : libapache2-mod-auth-openidc - LTS security update	Nessus	Debian Local Security Checks	medium
174376	SUSE SLES15 / openSUSE 15 Security Update : apache2-mod_auth_openidc (SUSE-SU-2023:1849-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2023-28625

high

Tenable Plugins

medium

medium

medium

medium

high

high

medium

high