Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass     (CVE-2023-24021)

  - In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and     could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered     independent changes to the ModSecurity (C language) codebase. (CVE-2022-48279)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 9 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass     (CVE-2023-24021)

  - In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and     could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered     independent changes to the ModSecurity (C language) codebase. (CVE-2022-48279)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The versions of HTTP Server installed on the remote host are affected by multiple vulnerabilities as referenced in the April 2024 CPU advisory:

  - Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: Plugins (BSAFE Crypto-J)).     Supported versions that are affected are 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows     unauthenticated attacker with network access via TLS to compromise Oracle HTTP Server. Successful attacks of this     vulnerability can result in takeover of Oracle HTTP Server. (CVE-2022-34381)

  - Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: SSL Module (ModSecurity)).     The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated     attacker with network access via TLS to compromise Oracle HTTP Server. Successful attacks of this vulnerability     can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server     accessible data. (CVE-2023-24021)

  - Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: Third Party (Apache HTTP     Server)). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows     unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server. Successful attacks of this     vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of     Oracle HTTP Server. (CVE-2023-31122)


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

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6370-1 advisory.

    It was discovered that ModSecurity incorrectly handled certain nested JSON objects. An attacker could     possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu     18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-42717)

    It was discovered that ModSecurity incorrectly handled certain HTTP multipart requests. A remote attacker     could possibly use this issue to bypass ModSecurity restrictions. (CVE-2022-48279)

    It was discovered that ModSecurity incorrectly handled certain file uploads. A remote attacker could     possibly use this issue to cause a buffer overflow and a firewall failure. This issue only affected Ubuntu     16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-24021)

Tenable has extracted the preceding description block directly from the Ubuntu 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 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4629 advisory.

    Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This     software, such as Apache HTTP Server, is common to multiple JBoss middleware products and packaged under     Red Hat JBoss Core Services, to allow for faster distribution of updates and for a more consistent update     experience.

    This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.57 serves as a replacement for Red Hat     JBoss Core Services Apache HTTP Server 2.4.51 Service Pack 2, and includes bug fixes and enhancements,     which are documented in the Release Notes linked to in the References section.

    Security Fix(es):

    * apr-util: integer overflow/wraparound in apr_encode (CVE-2022-24963)

    * httpd: mod_proxy_ajp: Possible request smuggling (CVE-2022-36760)

    * httpd: mod_proxy: HTTP response splitting (CVE-2022-37436)

    * mod_security: incorrect parsing of HTTP multipart requests leads to web application firewall bypass     (CVE-2022-48279)

    * modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass     (CVE-2023-24021)

    * httpd: mod_proxy_uwsgi HTTP response splitting (CVE-2023-27522)

    * curl: use after free in SSH sha256 fingerprint check (CVE-2023-28319)

    * curl: IDN wildcard match may lead to Improper Cerificate Validation (CVE-2023-28321)

    * curl: more POST-after-PUT confusion (CVE-2023-28322)

    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.

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.

This Solaris system is missing necessary patches to address critical security updates :

The version of mod_security installed on the remote host is prior to 2.9.7-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2098 advisory.

  - In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and     could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered     independent changes to the ModSecurity (C language) codebase. (CVE-2022-48279)

  - Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application     Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the     FILES_TMP_CONTENT collection. (CVE-2023-24021)

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

According to the versions of the mod_security package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and     could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered     independent changes to the ModSecurity (C language) codebase. (CVE-2022-48279)

  - Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application     Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the     FILES_TMP_CONTENT collection. (CVE-2023-24021)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-8aa264d5c5 advisory.

    - new version 2.9.7
    - switch to PCRE2

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 Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-bc61f7a145 advisory.

    - new version 2.9.7
    - switch to PCRE2

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 Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-09f0496e60 advisory.

    - new version 2.9.7
    - switch to PCRE2

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 SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2023:0447-1 advisory.

  - Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application     Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the     FILES_TMP_CONTENT collection. (CVE-2023-24021)

Note that Nessus has not tested for this issue 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-2023:0431-1 advisory.

  - Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application     Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the     FILES_TMP_CONTENT collection. (CVE-2023-24021)

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-3283 advisory.

  - The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass for HTTP multipart     requests by submitting a payload that uses a character encoding scheme via the Content-Type or the     deprecated Content-Transfer-Encoding multipart MIME header fields that will not be decoded and inspected     by the web application firewall engine and the rule set. The multipart payload will therefore bypass     detection. A vulnerable backend that supports these encoding schemes can potentially be exploited. The     legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and     3.3.2. Integrators and users are advised upgrade to 3.2.2 and 3.3.3 respectively. The mitigation against     these vulnerabilities depends on the installation of the latest ModSecurity version (v2.9.6 / v3.0.8).
    (CVE-2022-39956)

  - In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and     could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered     independent changes to the ModSecurity (C language) codebase. (CVE-2022-48279)

  - Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application     Firewall bypasses and buffer overflows on the Web Application Firewall when executing rules that read the     FILES_TMP_CONTENT collection. (CVE-2023-24021)

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

ID	Name	Product	Family	Severity
200057	RHEL 8 : mod_security (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
200056	RHEL 9 : mod_security (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
193460	Oracle HTTP Server (April 2024 CPU)	Nessus	Web Servers	critical
181427	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 ESM : ModSecurity vulnerabilities (USN-6370-1)	Nessus	Ubuntu Local Security Checks	high
179879	RHEL 7 / 8 : Red Hat JBoss Core Services Apache HTTP Server 2.4.57 (RHSA-2023:4629)	Nessus	Red Hat Local Security Checks	critical
178626	Oracle Solaris Critical Patch Update : jul2023_SRU11_4_58_144_3	Nessus	Solaris Local Security Checks	critical
177861	Amazon Linux 2 : mod_security (ALAS-2023-2098)	Nessus	Amazon Linux Local Security Checks	high
176993	EulerOS 2.0 SP5 : mod_security (EulerOS-SA-2023-2160)	Nessus	Huawei Local Security Checks	high
174651	Fedora 36 : mod_security (2023-8aa264d5c5)	Nessus	Fedora Local Security Checks	high
174647	Fedora 38 : mod_security (2023-bc61f7a145)	Nessus	Fedora Local Security Checks	high
174645	Fedora 37 : mod_security (2023-09f0496e60)	Nessus	Fedora Local Security Checks	high
174213	EulerOS 2.0 SP8 : mod_security (EulerOS-SA-2023-1601)	Nessus	Huawei Local Security Checks	high
171617	SUSE SLES15 Security Update : apache2-mod_security2 (SUSE-SU-2023:0447-1)	Nessus	SuSE Local Security Checks	high
171530	SUSE SLES15 / openSUSE 15 Security Update : apache2-mod_security2 (SUSE-SU-2023:0431-1)	Nessus	SuSE Local Security Checks	high
170697	Debian DLA-3283-1 : modsecurity-apache - LTS security update	Nessus	Debian Local Security Checks	critical

Detections

Analytics

CVE-2023-24021

high

Tenable Plugins

high

high

critical

high

critical

critical

high

high

high

high

high

high

high

high

critical