According to its self-reported version, the Tenable SecurityCenter application installed on the remote host has a third-party software vulnerability in Apache HTTP Server. 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.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5376 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)

  - 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 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 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 remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0322-1 advisory.

    - CVE-2022-37436: Fixed an issue in mod_proxy where a malicious       backend could cause the response headers to be truncated early,       resulting in some headers being incorporated into the response body       (bsc#1207251).
    - CVE-2022-36760: Fixed an issue in mod_proxy_ajp that could allow       request smuggling attacks (bsc#1207250).
    - CVE-2006-20001: Fixed an issue in mod_proxy_ajp where a request       header could cause memory corruption (bsc#1207247).

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 remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0321-1 advisory.

    - CVE-2022-37436: Fixed an issue in mod_proxy where a malicious       backend could cause the response headers to be truncated early,       resulting in some headers being incorporated into the response body       (bsc#1207251).
    - CVE-2022-36760: Fixed an issue in mod_proxy_ajp that could allow       request smuggling attacks (bsc#1207250).
    - CVE-2006-20001: Fixed an issue in mod_proxy_ajp where a request       header could cause memory corruption (bsc#1207247).

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 remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:0852 advisory.

  - 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)

  - 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)

  - 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.

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)

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)

  - 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 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 CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the httpd-2.4.53-11.el9 build changelog.

  - out-of-bounds read/write of zero byte (CVE-2006-20001)

  - Possible request smuggling (CVE-2022-36760)

  - HTTP response splitting (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.

An update of the httpd package has been released.

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-2023:0026 advisory.

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

      CVE-2006-20001:
      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-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-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.

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 Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0749 advisory.

    This advisory aggregates security fixes for the httpd SRPM in CIQ LTS 8.6. It addresses 5 CVEs:
    CVE-2006-20001, CVE-2022-36760, CVE-2022-37436, CVE-2023-25690, CVE-2023-27522.

Tenable has extracted the preceding description block directly from the CIQ 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 Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0751 advisory.

    This advisory aggregates security fixes for the mod_http2 SRPM in CIQ LTS 8.6. It addresses 5 CVEs:
    CVE-2006-20001, CVE-2022-36760, CVE-2022-37436, CVE-2023-25690, CVE-2023-27522.

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

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
171868	Tenable SecurityCenter 5.22.0 / 5.23.1 / 6.0.0 Apache Header Truncation (TNS-2023-06)	Nessus	Misc.	2023/2/23	2024/5/10	medium
173387	Debian DSA-5376-1 : apache2 - security update	Nessus	Debian Local Security Checks	2023/3/24	2023/10/21	critical
176795	EulerOS Virtualization 2.11.0 : httpd (EulerOS-SA-2023-2123)	Nessus	Huawei Local Security Checks	2023/6/7	2023/6/7	critical
171407	SUSE SLED15: apache2 / apache2-devel / apache2-doc / apache2-event / etc (SUSE-SU-2023:0322-1)	Nessus	SuSE Local Security Checks	2023/2/14	2026/6/26	critical
171420	SUSE SLES15: apache2 / apache2-devel / apache2-doc / apache2-prefork / etc (SUSE-SU-2023:0321-1)	Nessus	SuSE Local Security Checks	2023/2/14	2026/6/26	critical
171756	Rocky Linux 8 : httpd:2.4 (RLSA-2023:0852)	Nessus	Rocky Linux Local Security Checks	2023/2/21	2023/11/6	critical
172689	EulerOS 2.0 SP10 : httpd (EulerOS-SA-2023-1525)	Nessus	Huawei Local Security Checks	2023/3/19	2023/3/19	critical
175276	EulerOS 2.0 SP11 : httpd (EulerOS-SA-2023-1758)	Nessus	Huawei Local Security Checks	2023/5/8	2023/5/8	critical
177164	EulerOS Virtualization 3.0.6.0 : httpd (EulerOS-SA-2023-2240)	Nessus	Huawei Local Security Checks	2023/6/13	2023/6/13	critical
191162	CentOS 9 : httpd-2.4.53-11.el9	Nessus	CentOS Local Security Checks	2024/2/29	2024/4/26	critical
203331	Photon OS 4.0: Httpd PHSA-2023-4.0-0325	Nessus	PhotonOS Local Security Checks	2024/7/23	2024/7/23	critical
238823	TencentOS Server 3: httpd (TSSA-2023:0026)	Nessus	Tencent Local Security Checks	2025/6/16	2025/12/5	critical
354735	Rocky Linux 8.6 [CIQ] Security Update: httpd / httpd-debuginfo / httpd-debugsource / httpd-devel / etc Multiple Vulnerabilities (ciqsa-2026_0749)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	critical
355254	Rocky Linux 8.6 [CIQ] Security Update: mod_http2 / mod_http2-debuginfo / mod_http2-debugsource Multiple Vulnerabilities (ciqsa-2026_0751)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	critical

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