The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:0970 advisory.

    The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

    Security Fix(es):

    * httpd: mod_dav: out-of-bounds read/write of zero byte (CVE-2006-20001)

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

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

    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.

    Bug Fix(es):

    * httpd-init fails to create localhost.crt, localhost.key due to sscg default now creates a     /dhparams.pem and is not idempotent if the file /dhparams.pem already exists. (BZ#2165975)

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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:0970 advisory.

  - A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool     (heap) memory location beyond the header value sent. This could cause the process to crash. This issue     affects Apache HTTP Server 2.4.54 and earlier. (CVE-2006-20001)

  - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of     Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This     issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.
    (CVE-2022-36760)

  - Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated     early, resulting in some headers being incorporated into the response body. If the later headers have any     security purpose, they will not be interpreted by the client. (CVE-2022-37436)

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 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0666 advisory.

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

    CVE-2021-44790:
    A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser     (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the     vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and     earlier.

    CVE-2022-36760:
    Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of     Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to.  This     issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.

    CVE-2022-37436:
    Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated     early, resulting in some headers being incorporated into the response body. If the later headers have any     security purpose, they will not be interpreted by the client.

    CVE-2023-25690:
    Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request     Smuggling attack.

    Configurations are affected when mod_proxy is enabled along with some form of RewriteRule      or ProxyPassMatch in which a non-specific pattern matches      some portion of the user-supplied request-target (URL) data and is then      re-inserted into the proxied request-target using variable     substitution. For example, something like:

    RewriteEngine on     RewriteRule ^/here/(.*) http://example.com:8080/elsewhere?$1; [P]     ProxyPassReverse /here/ http://example.com:8080/

    Request splitting/smuggling could result in bypass of access controls in the proxy server, proxying     unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at     least version 2.4.56 of Apache HTTP Server.

    CVE-2023-27522:
    HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache     HTTP Server: from 2.4.30 through 2.4.55.

    Special characters in the origin response header can truncate/split the response forwarded to the client.

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.

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

  - A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool     (heap) memory location beyond the header value sent. This could cause the process to crash. This issue     affects Apache HTTP Server 2.4.54 and earlier. (CVE-2006-20001)

  - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of     Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This     issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.
    (CVE-2022-36760)

  - Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated     early, resulting in some headers being incorporated into the response body. If the later headers have any     security purpose, they will not be interpreted by the client. (CVE-2022-37436)

  - Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request     Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of     RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied     request-target (URL) data and is then re-inserted into the proxied request-target using variable     substitution. For example, something like: RewriteEngine on RewriteRule '^/here/(.*)'     'http://example.com:8080/elsewhere?$1'; [P] ProxyPassReverse /here/ http://example.com:8080/ Request     splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended     URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version     2.4.56 of Apache HTTP Server. (CVE-2023-25690)

  - HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache     HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can     truncate/split the response forwarded to the client. (CVE-2023-27522)

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.

According to the versions of the httpd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool     (heap) memory location beyond the header value sent. This could cause the process to crash. This issue     affects Apache HTTP Server 2.4.54 and earlier. (CVE-2006-20001)

  - Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap     memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and     prior versions. (CVE-2022-23943)

  - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of     Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This     issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.
    (CVE-2022-36760)

  - Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated     early, resulting in some headers being incorporated into the response body. If the later headers have any     security purpose, they will not be interpreted by the client. (CVE-2022-37436)

  - Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request     Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of     RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied     request-target (URL) data and is then re-inserted into the proxied request-target using variable     substitution. For example, something like: RewriteEngine on RewriteRule '^/here/(.*)'     'http://example.com:8080/elsewhere?$1'; [P] ProxyPassReverse /here/ http://example.com:8080/ Request     splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended     URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version     2.4.56 of Apache HTTP Server. (CVE-2023-25690)

  - HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache     HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can     truncate/split the response forwarded to the client. (CVE-2023-27522)

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 12.4.0.0 version of Enterprise Manager Ops Center installed on the remote host is affected by multiple vulnerabilities as referenced in the July 2023 CPU advisory:

  - Vulnerability in the Oracle Enterprise Manager Ops Center product of Oracle Enterprise Manager     (component: Networking (Apache HTTP Server)). The supported version that is affected is 12.4.0.0.
    Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to     compromise Oracle Enterprise Manager Ops Center. Successful attacks of this vulnerability can     result in takeover of Oracle Enterprise Manager Ops Center. (CVE-2023-25690)

  - Vulnerability in the Oracle Enterprise Manager Ops Center product of Oracle Enterprise Manager     (component: Networking (Apache HTTP Server)). The supported version that is affected is 12.4.0.0.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to     smuggle requests to the AJP server the HTTP server forwards requests to. (CVE-2022-36760)

  - Vulnerability in the Oracle Enterprise Manager Ops Center product of Oracle Enterprise Manager     (component: Networking (Apache HTTP Server)). The supported version that is affected is 12.4.0.0.
    Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to     create a denial of service condition in Oracle Enterprise Manager Ops Center. (CVE-2006-20001)

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	Published	Updated	Severity
171979	RHEL 9 : httpd (RHSA-2023:0970)	Nessus	Red Hat Local Security Checks	2/28/2023	11/7/2024	critical
171990	AlmaLinux 9 : httpd (ALSA-2023:0970)	Nessus	Alma Linux Local Security Checks	2/28/2023	2/28/2023	critical
239126	TencentOS Server 4: httpd (TSSA-2024:0666)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	critical
175493	EulerOS 2.0 SP9 : httpd (EulerOS-SA-2023-1872)	Nessus	Huawei Local Security Checks	5/13/2023	5/24/2023	critical
176841	EulerOS Virtualization 2.11.1 : httpd (EulerOS-SA-2023-2071)	Nessus	Huawei Local Security Checks	6/7/2023	6/7/2023	critical
178483	Oracle Enterprise Manager Ops Center (Jul 2023 CPU)	Nessus	Misc.	7/19/2023	1/18/2024	critical

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