Amazon Linux AMI : clamav (ALAS-2023-1694)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2023-1694.
##

include('compat.inc');

if (description)
{
  script_id(171851);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/01");

  script_cve_id("CVE-2023-20032", "CVE-2023-20052");

  script_name(english:"Amazon Linux AMI : clamav (ALAS-2023-1694)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux AMI host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of clamav installed on the remote host is prior to 0.103.8-1.52. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS-2023-1694 advisory.

  - - Fix daily.cvd file - Split out documentation into separate -doc sub-package - (#2128276) Please port
    your pcre dependency to pcre2 - Explicit dependency on systemd since systemd-devel no longer has this
    dependency on F37+ - (#2136977) not requires data(clamav) on clamav-libs - (#2023371) Add documentation to
    preserve user permissions of DatabaseOwner  ----  ClamAV 0.103.8 is a critical patch release with the
    following fixes:   *   CVE-2023-20032<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20032>:
    Fixed a possible remote code execution vulnerability in the HFS+ file parser. The issue affects versions
    1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier. Thank you to Simon Scannell for reporting
    this issue.   *   CVE-2023-20052<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20052>: Fixed a
    possible remote information leak vulnerability in the DMG file parser. The issue affects versions 1.0.0
    and earlier, 0.105.1 and earlier, and 0.103.7 and earlier. Thank you to Simon Scannell for reporting this
    issue.  (CVE-2023-20032, CVE-2023-20052)

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/ALAS-2023-1694.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/../../faqs.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-20032.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-20052.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: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:N/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-2023-20032");

  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:"2023/02/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/02/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/02/23");

  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-db");
  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-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-milter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamav-update");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:clamd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
  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 != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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

var pkgs = [
    {'reference':'clamav-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-data-0.103.8-1.52.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-db-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-db-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debuginfo-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-debuginfo-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-devel-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-devel-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-filesystem-0.103.8-1.52.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-lib-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-milter-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamav-update-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-0.103.8-1.52.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'clamd-0.103.8-1.52.amzn1', 'cpu':'x86_64', 'release':'ALA', '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-db / etc");
}