According to its self-reported version, the Tenable SecurityCenter application installed on the remote host is prior to 5.19.2 and is missing a security patch, SC-202110.1.  It is therefore, affected by multiple vulnerabilities in the Apache subcomponent of Security Center. 

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2483:01 advisory.

    * httpd: mod_proxy: SSRF via a crafted request uri-path containing unix: (CVE-2021-40438)
      * httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691)

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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-3871:03 advisory.

    * httpd: mod_sed: Read/write beyond bounds (CVE-2022-23943)
      * httpd: Request splitting via HTTP/2 method injection and mod_proxy (CVE-2021-33193)
      * httpd: NULL pointer dereference via malformed requests (CVE-2021-34798)
      * httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path (CVE-2021-36160)
      * httpd: Out-of-bounds write in ap_escape_quotes() via malicious input (CVE-2021-39275)
      * httpd: possible NULL dereference or SSRF in forward proxy configurations (CVE-2021-44224)
      * httpd: mod_lua: Use of uninitialized value of in r:parsebody (CVE-2022-22719)
      * httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody     (CVE-2022-22721)
      * httpd: mod_proxy_ajp: Possible request smuggling (CVE-2022-26377)
      * httpd: mod_lua: DoS in r:parsebody (CVE-2022-29404)
      * httpd: mod_sed: DoS vulnerability (CVE-2022-30522)
      * httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism (CVE-2022-31813)
      * httpd: out-of-bounds read via ap_rwrite() (CVE-2022-28614)
      * httpd: out-of-bounds read in ap_strcmp_match() (CVE-2022-28615)
      * httpd: mod_lua: Information disclosure with websockets (CVE-2022-30556)

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 host is affected by the vulnerability described in GLSA-202208-20 (Apache HTTPD: Multiple Vulnerabilities)

  - A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead     to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.
    (CVE-2021-33193)

  - Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP     Server 2.4.48 and earlier. (CVE-2021-34798)

  - A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and     crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive). (CVE-2021-36160)

  - ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules     pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache     HTTP Server 2.4.48 and earlier. (CVE-2021-39275)

  - A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the     remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. (CVE-2021-40438)

  - While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request     processing, allowing an external source to DoS the server. This requires a specially crafted request. The     vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.
    (CVE-2021-41524)

  - A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could     use a path traversal attack to map URLs to files outside the directories configured by Alias-like     directives. If files outside of these directories are not protected by the usual default configuration     require all denied, these requests can succeed. If CGI scripts are also enabled for these aliased     pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This     issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found     to be incomplete, see CVE-2021-42013. (CVE-2021-41773)

  - It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker     could use a path traversal attack to map URLs to files outside the directories configured by Alias-like     directives. If files outside of these directories are not protected by the usual default configuration     require all denied, these requests can succeed. If CGI scripts are also enabled for these aliased     pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache     2.4.50 and not earlier versions. (CVE-2021-42013)

  - A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL     pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for     requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This     issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). (CVE-2021-44224)

  - 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     vulnerability though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and     earlier. (CVE-2021-44790)

  - A carefully crafted request body can cause a read to a random memory area which could cause the process to     crash. This issue affects Apache HTTP Server 2.4.52 and earlier. (CVE-2022-22719)

  - Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered     discarding the request body, exposing the server to HTTP Request Smuggling (CVE-2022-22720)

  - If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems     an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server     2.4.52 and earlier. (CVE-2022-22721)

  - 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 2.4.53 and prior versions.
    (CVE-2022-26377)

  - The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an     attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with     mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use     the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against     current headers to resolve the issue. (CVE-2022-28614)

  - Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds in     ap_strcmp_match() when provided with an extremely large input buffer. While no code distributed with the     server can be coerced into such a call, third-party modules or lua scripts that use ap_strcmp_match() may     hypothetically be affected. (CVE-2022-28615)

  - In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0)     may cause a denial of service due to no default limit on possible input size. (CVE-2022-29404)

  - If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the input     to mod_sed may be very large, mod_sed may make excessively large memory allocations and trigger an abort.
    (CVE-2022-30522)

  - Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point     past the end of the storage allocated for the buffer. (CVE-2022-30556)

  - Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on     client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on     the origin server/application. (CVE-2022-31813)

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

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has httpd packages installed that are affected by multiple vulnerabilities:

  - In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server     could cause a heap overflow (CVE-2021-26691)

  - Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP     Server 2.4.48 and earlier. (CVE-2021-34798)

  - ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules     pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache     HTTP Server 2.4.48 and earlier. (CVE-2021-39275)

  - A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the     remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. (CVE-2021-40438)

  - 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-2021-44790)

  - Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered     discarding the request body, exposing the server to HTTP Request Smuggling (CVE-2022-22720)

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 Oracle HTTP Server installed on the remote host is affected by a vulnerability as referenced in the January 2022 CPU advisory:

  - Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: OSSL Module     (Apache HTTP Server)). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 12.2.1.5.0.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to     compromise Oracle HTTP Server. While the vulnerability is in Oracle HTTP Server, attacks may significantly     impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle HTTP     Server.

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 SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3299-1 advisory.

  - Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP     Server 2.4.48 and earlier. (CVE-2021-34798)

  - ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules     pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache     HTTP Server 2.4.48 and earlier. (CVE-2021-39275)

  - A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the     remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. (CVE-2021-40438)

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 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4982 advisory.

    Several vulnerabilities have been found in the Apache HTTP server, which could result in denial of     service. In addition a vulnerability was discovered in mod_proxy with which an attacker could trick the     server to forward requests to arbitrary origin servers. For the oldstable distribution (buster), these     problems have been fixed in version 2.4.38-3+deb10u6. For the stable distribution (bullseye), these     problems have been fixed in version 2.4.51-1~deb11u1. We recommend that you upgrade your apache2 packages.
    For the detailed security status of apache2 please refer to its security tracker page at:
    https://security-tracker.debian.org/tracker/apache2

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 Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-3856 advisory.

    [2.4.6-97.0.1.1]
    - replace index.html with Oracle's index page oracle_index.html

    [2.4.6-97.1]
    - Resolves: #2011729 - CVE-2021-40438 httpd: mod_proxy: SSRF via a crafted       request uri-path containing 'unix:'

Tenable has extracted the preceding description block directly from the Oracle Linux 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 version of httpd installed on the remote host is prior to 2.4.49. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2021-259-01 advisory.

  - A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead     to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.
    (CVE-2021-33193)

  - Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP     Server 2.4.48 and earlier. (CVE-2021-34798)

  - A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and     crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive). (CVE-2021-36160)

  - ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules     pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache     HTTP Server 2.4.48 and earlier. (CVE-2021-39275)

  - A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the     remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. (CVE-2021-40438)

Note that Nessus has not tested for this issue 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 :

  - Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP     Server 2.4.48 and earlier. (CVE-2021-34798)

  - ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules     pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache     HTTP Server 2.4.48 and earlier. (CVE-2021-39275)

  - A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the     remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. (CVE-2021-40438)

  - 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-2021-44790)

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 version of AOS installed on the remote host is prior to 5.20.3. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.20.3 advisory.

  - xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and     watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows     remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory     corruption) via a crafted XML document. (CVE-2016-4658)

  - NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow     when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures     encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for     certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how     they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and     PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and     Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
    (CVE-2021-43527)

  - Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP     transfer-encoding request header in some circumstances leading to the possibility to request smuggling     when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if     the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding;
    and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
    (CVE-2021-33037)

  - A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked     down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries     platform) a root like local user could use this flaw to further increase their privileges to that of a     running kernel. (CVE-2020-27777)

  - A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
    This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name     space (CVE-2021-22555)

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
154240	Tenable SecurityCenter 5.16.0 < 5.19.2 Multiple Vulnerabilities (TNS-2021-17)	Nessus	Misc.	10/19/2021	5/10/2024	critical
294194	MiracleLinux 8 : httpd:2.4 (AXSA:2021-2483:01)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	critical
292410	MiracleLinux 7 : httpd24-httpd-2.4.34-23.el7.5 (AXSA:2022-3871:03)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	critical
164114	GLSA-202208-20 : Apache HTTPD: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	8/15/2022	1/18/2024	critical
174053	NewStart CGSL CORE 5.05 / MAIN 5.05 : httpd Multiple Vulnerabilities (NS-SA-2023-0011)	Nessus	NewStart CGSL Local Security Checks	4/11/2023	4/11/2023	critical
156944	Oracle HTTP Server (Jan 2022 CPU)	Nessus	Web Servers	1/21/2022	4/25/2023	critical
153922	SUSE SLED12 / SLES12 Security Update : apache2 (SUSE-SU-2021:3299-1)	Nessus	SuSE Local Security Checks	10/7/2021	7/13/2023	critical
153970	Debian DSA-4982-1 : apache2 - security update	Nessus	Debian Local Security Checks	10/10/2021	1/24/2025	critical
154164	Oracle Linux 7 : httpd (ELSA-2021-3856)	Nessus	Oracle Linux Local Security Checks	10/15/2021	10/23/2024	critical
153456	Slackware Linux 14.0 / 14.1 / 14.2 / current httpd Multiple Vulnerabilities (SSA:2021-259-01)	Nessus	Slackware Local Security Checks	9/17/2021	4/25/2023	critical
169642	EulerOS Virtualization 3.0.2.6 : httpd (EulerOS-SA-2023-1074)	Nessus	Huawei Local Security Checks	1/6/2023	1/16/2024	critical
164611	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.20.3)	Nessus	Misc.	9/1/2022	10/7/2025	high

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