Oracle Linux 8 : edk2 (ELSA-2024-12343)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2024-12343.
##

include('compat.inc');

if (description)
{
  script_id(193858);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/25");

  script_cve_id(
    "CVE-2022-36763",
    "CVE-2022-36764",
    "CVE-2022-36765",
    "CVE-2023-45229",
    "CVE-2023-45230",
    "CVE-2023-45231",
    "CVE-2023-45232",
    "CVE-2023-45233",
    "CVE-2023-45234",
    "CVE-2023-45235"
  );

  script_name(english:"Oracle Linux 8 : edk2 (ELSA-2024-12343)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2024-12343 advisory.

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability via a long server ID option in
    DHCPv6 client. This vulnerability can be exploited by an attacker to gain unauthorized access and
    potentially lead to a loss of Confidentiality, Integrity and/or Availability. (CVE-2023-45230)

  - EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing Neighbor
    Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access
    and potentially lead to a loss of Confidentiality. (CVE-2023-45231)

  - EDK2 is susceptible to a vulnerability in the Tcg2MeasurePeImage() function, allowing a user to trigger a
    heap buffer overflow via a local network. Successful exploitation of this vulnerability may result in a
    compromise of confidentiality, integrity, and/or availability. (CVE-2022-36764)

  - EDK2 is susceptible to a vulnerability in the CreateHob() function, allowing a user to trigger a integer
    overflow to buffer overflow via a local network. Successful exploitation of this vulnerability may result
    in a compromise of confidentiality, integrity, and/or availability. (CVE-2022-36765)

  - EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing the IA_NA or
    IA_TA option in a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain
    unauthorized access and potentially lead to a loss of Confidentiality. (CVE-2023-45229)

  - EDK2's Network Package is susceptible to an infinite loop vulnerability when parsing unknown options in
    the Destination Options header of IPv6. This vulnerability can be exploited by an attacker to gain
    unauthorized access and potentially lead to a loss of Availability. (CVE-2023-45232)

  - EDK2's Network Package is susceptible to an infinite lop vulnerability when parsing a PadN option in the
    Destination Options header of IPv6. This vulnerability can be exploited by an attacker to gain
    unauthorized access and potentially lead to a loss of Availability. (CVE-2023-45233)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when handling Server ID option
    from a DHCPv6 proxy Advertise message. This vulnerability can be exploited by an attacker to gain
    unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45235)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers
    option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain
    unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45234)

  - EDK2 is susceptible to a vulnerability in the Tcg2MeasureGptTable() function, allowing a user to trigger a
    heap buffer overflow via a local network. Successful exploitation of this vulnerability may result in a
    compromise of confidentiality, integrity, and/or availability. (CVE-2022-36763)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2024-12343.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected edk2-aarch64 and / or edk2-ovmf packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-45235");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:8::kvm_appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:edk2-aarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:edk2-ovmf");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var pkgs = [
    {'reference':'edk2-aarch64-20240227-5.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'edk2-ovmf-20240227-5.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'edk2-aarch64-20240227-5.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'edk2-ovmf-20240227-5.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && rpm_check(release:_release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'edk2-aarch64 / edk2-ovmf');
}