Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS : ClamAV vulnerabilities (USN-7011-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7011-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(207280);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/16");

  script_cve_id("CVE-2024-20505", "CVE-2024-20506");
  script_xref(name:"USN", value:"7011-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS : ClamAV vulnerabilities (USN-7011-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-7011-1 advisory.

    It was discovered that ClamAV incorrectly handled certain PDF files. A remote attacker could possibly use
    this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2024-20505)

    It was discovered that ClamAV incorrectly handled logfile privileges. A local attacker could use this
    issue to cause ClamAV to overwrite arbitrary files, possibly leading to privilege escalation.
    (CVE-2024-20506)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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://ubuntu.com/security/notices/USN-7011-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-20506");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/09/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav-freshclam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav-milter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav-testfiles");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamdscan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libclamav-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libclamav11t64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libclamav9");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 24.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '20.04', 'pkgname': 'clamav', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamav-base', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamav-milter', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'clamdscan', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '20.04', 'pkgname': 'libclamav9', 'pkgver': '0.103.12+dfsg-0ubuntu0.20.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav-base', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav-milter', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'clamdscan', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '22.04', 'pkgname': 'libclamav9', 'pkgver': '0.103.12+dfsg-0ubuntu0.22.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav-base', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav-daemon', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav-freshclam', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav-milter', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamav-testfiles', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'clamdscan', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'libclamav-dev', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'},
    {'osver': '24.04', 'pkgname': 'libclamav11t64', 'pkgver': '1.0.7+dfsg-0ubuntu0.24.04.1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'clamav / clamav-base / clamav-daemon / clamav-freshclam / etc');
}