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

  - Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in     mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team     could create one, though some particular compiler and/or compilation option might make it possible, with     limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow     (CVE-2020-35452)

  - Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can     cause a NULL pointer dereference and crash, leading to a possible Denial Of Service (CVE-2021-26690)

  - 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)

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 :

  - 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 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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:6753 advisory.

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

    Security Fix(es):

    * 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)

    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):

    * proxy rewrite to unix socket fails with CVE-2021-40438 fix (BZ#2022319)

    Additional changes:

    * To fix CVE-2022-29404, the default value for the LimitRequestBody directive in the Apache HTTP Server     has been changed from 0 (unlimited) to 1 GiB.

    On systems where the value of LimitRequestBody is not explicitly specified in an httpd configuration     file, updating the httpd package sets LimitRequestBody to the default value of 1 GiB. As a consequence,     if the total size of the HTTP request body exceeds this 1 GiB default limit, httpd returns the 413 Request     Entity Too Large error code.

    If the new default allowed size of an HTTP request message body is insufficient for your use case, update     your httpd configuration files within the respective context (server, per-directory, per-file, or per-     location) and set your preferred limit in bytes. For example, to set a new 2 GiB limit, use:

    LimitRequestBody 2147483648

    Systems already configured to use any explicit value for the LimitRequestBody directive are unaffected     by this change.

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 version of AOS installed on the remote host is prior to 6.1.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-6.1.1 advisory.

  - JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write     access to the Log4j configuration. The attacker can provide TopicBindingName and     TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result     in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2     when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of     life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the     previous versions. (CVE-2021-4104)

  - It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-     default configurations. This could allows attackers with control over Thread Context Map (MDC) input data     when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for     example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input     data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some     environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix     this issue by removing support for message lookup patterns and disabling JNDI functionality by default.
    (CVE-2021-45046)

  - Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI     features used in configuration, log messages, and parameters do not protect against attacker controlled     LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters     can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From     log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3,     and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to     log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
    (CVE-2021-44228)

  - 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)

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
157994	EulerOS Virtualization 3.0.6.6 : httpd (EulerOS-SA-2022-1124)	Nessus	Huawei Local Security Checks	2/13/2022	4/25/2023	critical
159879	EulerOS Virtualization 2.10.1 : httpd (EulerOS-SA-2022-1373)	Nessus	Huawei Local Security Checks	4/18/2022	4/25/2023	critical
165553	RHEL 7 : httpd24-httpd (RHSA-2022:6753)	Nessus	Red Hat Local Security Checks	9/29/2022	11/7/2024	critical
164572	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-6.1.1)	Nessus	Misc.	9/1/2022	2/17/2025	high

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