Amazon Linux 2022 : clamav (ALAS2022-2022-229)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2022 Security Advisory ALAS2022-2022-229.
##

include('compat.inc');

if (description)
{
  script_id(169517);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/11");

  script_cve_id(
    "CVE-2022-20698",
    "CVE-2022-20770",
    "CVE-2022-20771",
    "CVE-2022-20785",
    "CVE-2022-20796"
  );

  script_name(english:"Amazon Linux 2022 : clamav (ALAS2022-2022-229)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2022 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of clamav installed on the remote host is prior to 0.103.7-1. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS2022-2022-229 advisory.

  - A vulnerability in the OOXML parsing module in Clam AntiVirus (ClamAV) Software version 0.104.1 and LTS
    version 0.103.4 and prior versions could allow an unauthenticated, remote attacker to cause a denial of
    service condition on an affected device. The vulnerability is due to improper checks that may result in an
    invalid pointer read. An attacker could exploit this vulnerability by sending a crafted OOXML file to an
    affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash,
    resulting in a denial of service condition. (CVE-2022-20698)

  - On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier
    and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV)
    versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an
    unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a
    description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional
    information becomes available. (CVE-2022-20770)

  - On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier
    and 0.104.2 and earlier was disclosed: A vulnerability in the TIFF file parser of Clam AntiVirus (ClamAV)
    versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an
    unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a
    description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional
    information becomes available. (CVE-2022-20771)

  - On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier
    and 0.104.2 and earlier was disclosed: A vulnerability in HTML file parser of Clam AntiVirus (ClamAV)
    versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an
    unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a
    description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional
    information becomes available. (CVE-2022-20785)

  - On May 4, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier
    and 0.104.2 and earlier was disclosed: A vulnerability in Clam AntiVirus (ClamAV) versions 0.103.4,
    0.103.5, 0.104.1, and 0.104.2 could allow an authenticated, local attacker to cause a denial of service
    condition on an affected device. For a description of this vulnerability, see the ClamAV blog.
    (CVE-2022-20796)

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://alas.aws.amazon.com/AL2022/ALAS-2022-229.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-20698.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-20770.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-20771.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-20785.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-20796.html");
  script_set_attribute(attribute:"solution", value:
"Run 'yum update clamav' to update your system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2022-20785");

  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:"2022/01/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-filesystem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-lib-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-milter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-milter-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-update");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-update-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamd-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2022");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2022")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2022", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'clamav-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-data-0.103.7-1.amzn2022.0.2', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debugsource-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debugsource-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debugsource-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-devel-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-devel-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-devel-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-filesystem-0.103.7-1.amzn2022.0.2', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-debuginfo-0.103.7-1.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE}
];

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 = 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 && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
    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, "clamav / clamav-data / clamav-debuginfo / etc");
}