The version of httpd installed on the remote host is prior to 2.4.53-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1783 advisory.

    A flaw was found in the mod_lua module of httpd. A crafted request body can cause a read to a random     memory area due to an uninitialized value in functions called by the parsebody function. The highest treat     of this vulnerability is availability. (CVE-2022-22719)

    A flaw was found in httpd. The inbound connection is not closed when it fails to discard the request body,     which may expose the server to HTTP request smuggling. (CVE-2022-22720)

    A flaw was found in httpd, where it incorrectly limits the value of the LimitXMLRequestBody option. This     issue can lead to an integer overflow and later causes an out-of-bounds write. (CVE-2022-22721)

    An out-of-bounds read/write vulnerability was found in the mod_sed module of httpd. This flaw allows an     attacker to overwrite the memory of an httpd instance that is using mod_sed with data provided by the     attacker. (CVE-2022-23943)

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

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-072 advisory.

    There's a null pointer dereference and server-side request forgery flaw in httpd's mod_proxy module, when     it is configured to be used as a forward proxy. A crafted packet could be sent on the adjacent network to     the forward proxy that could cause a crash, or potentially SSRF via misdirected Unix Domain Socket     requests. In the worst case, this could cause a denial of service or compromise to confidentiality of     data. (CVE-2021-44224)

    A buffer overflow flaw in httpd's lua module could allow an out-of-bounds write. An attacker who is able     to submit a crafted request to an httpd instance that is using the lua module may be able to cause an     impact to confidentiality, integrity, and/or availability. (CVE-2021-44790)

    A flaw was found in the mod_lua module of httpd. A crafted request body can cause a read to a random     memory area due to an uninitialized value in functions called by the parsebody function. The highest treat     of this vulnerability is availability. (CVE-2022-22719)

    A flaw was found in httpd. The inbound connection is not closed when it fails to discard the request body,     which may expose the server to HTTP request smuggling. (CVE-2022-22720)

    A flaw was found in httpd, where it incorrectly limits the value of the LimitXMLRequestBody option. This     issue can lead to an integer overflow and later causes an out-of-bounds write. (CVE-2022-22721)

    An out-of-bounds read/write vulnerability was found in the mod_sed module of httpd. This flaw allows an     attacker to overwrite the memory of an httpd instance that is using mod_sed with data provided by the     attacker. (CVE-2022-23943)

    An HTTP request smuggling vulnerability was found in the mod_proxy_ajp module of httpd. This flaw allows     an attacker to smuggle requests to the AJP server, where it forwards requests. (CVE-2022-26377)

    An out-of-bounds read vulnerability was found in the mod_isapi module of httpd. The issue occurs when     httpd is configured to process requests with the mod_isapi module. (CVE-2022-28330)

    An out-of-bounds read vulnerability was found in httpd. A very large input to the ap_rputs and ap_rwrite     functions can lead to an integer overflow and result in an out-of-bounds read. (CVE-2022-28614)

    An out-of-bounds read vulnerability was found in httpd. A very large input to the ap_strcmp_match function     can lead to an integer overflow and result in an out-of-bounds read. (CVE-2022-28615)

    A flaw was found in the mod_lua module of httpd. A malicious request to a Lua script that calls     parsebody(0) can lead to a denial of service due to no default limit on the possible input size.
    (CVE-2022-29404)

    A flaw was found in the mod_sed module of httpd. A very large input to the mod_sed module can result in a     denial of service due to excessively large memory allocations. (CVE-2022-30522)

    A flaw was found in the mod_lua module of httpd. The data returned by the wsread function may point past     the end of the storage allocated for the buffer, resulting in information disclosure. (CVE-2022-30556)

    A flaw was found in the mod_proxy module of httpd. The server may remove the X-Forwarded-* headers from a     request based on the client-side Connection header hop-by-hop mechanism. (CVE-2022-31813)

Tenable has extracted the preceding description block directly from the tested product 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 version of Apache httpd installed on the remote host is prior to 2.4.53. It is, therefore, affected by multiple vulnerabilities as referenced in the 2.4.53 advisory.

  - mod_lua Use of uninitialized value of in r:parsebody: 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. Acknowledgements: Chamal De Silva (CVE-2022-22719)

  - HTTP request smuggling: 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 Acknowledgements: James     Kettle <james.kettle portswigger.net> (CVE-2022-22720)

  - Possible buffer overflow with very large or unlimited LimitXMLRequestBody in core: 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. Acknowledgements: Anonymous     working with Trend Micro Zero Day Initiative (CVE-2022-22721)

  - Read/write beyond bounds in mod_sed: 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. Acknowledgements: Ronald Crane (Zippenhop LLC)     (CVE-2022-23943)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2960 advisory.

    Several vulnerabilities have been discovered in the Apache HTTP server, which could result in denial of     service, request smuggling or buffer overflows. For Debian 9 stretch, these problems have been fixed in     version 2.4.25-3+deb9u13. 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 Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

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 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 SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0928-1 advisory.

  - 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)

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
160260	Amazon Linux 2 : httpd (ALAS-2022-1783)	Nessus	Amazon Linux Local Security Checks	4/27/2022	12/11/2024	critical
173084	Amazon Linux 2023 : httpd, httpd-core, httpd-devel (ALAS2023-2023-072)	Nessus	Amazon Linux Local Security Checks	3/21/2023	12/11/2024	critical
158900	Apache 2.4.x < 2.4.53 Multiple Vulnerabilities	Nessus	Web Servers	3/14/2022	11/6/2023	critical
159141	Debian DLA-2960-1 : apache2 - LTS security update	Nessus	Debian Local Security Checks	3/22/2022	1/24/2025	critical
164114	GLSA-202208-20 : Apache HTTPD: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	8/15/2022	1/18/2024	critical
159129	SUSE SLES12 Security Update : apache2 (SUSE-SU-2022:0928-1)	Nessus	SuSE Local Security Checks	3/22/2022	7/14/2023	critical

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