Linux Distros Unpatched Vulnerability : CVE-2022-1434

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(252478);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/20");

  script_cve_id("CVE-2022-1434");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2022-1434");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key.
    This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-
    the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the
    modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint
    to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at
    that point. Many application protocols require data to be sent from the client to the server first.
    Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0
    client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both
    directions. In this case both clients and servers could be affected, regardless of the application
    protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint
    communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this
    ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt
    data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to
    work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled
    by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite
    list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0
    endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with
    the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider
    explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been
    explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is
    1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the
    RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3
    (Affected 3.0.0,3.0.1,3.0.2). (CVE-2022-1434)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2022-1434");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-1434");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:edk2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/Ubuntu Linux-16.04");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/Debian/dpkg-l"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "edk2"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}