Ubuntu 14.04 LTS : ClamAV vulnerabilities (USN-3728-2)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3728-2. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(111526);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2018-14679",
    "CVE-2018-14680",
    "CVE-2018-14681",
    "CVE-2018-14682"
  );
  script_xref(name:"USN", value:"3728-2");

  script_name(english:"Ubuntu 14.04 LTS : ClamAV vulnerabilities (USN-3728-2)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"USN-3728-1 fixed several vulnerabilities in libmspack. In Ubuntu 14.04
libmspack is included into ClamAV. This update provides the
corresponding update for Ubuntu 14.04 LTS.

Original advisory details :

Hanno Bock discovered that libmspack incorrectly handled certain CHM
files. An attacker could possibly use this issue to cause a denial of
service. (CVE-2018-14679, CVE-2018-14680)

Jakub Wilk discovered that libmspack incorrectly handled
certain KWAJ files. An attacker could possibly use this
issue to execute arbitrary code. (CVE-2018-14681)

Dmitry Glavatskikh discovered that libmspack incorrectly
certain CHM files. An attacker could possibly use this issue
to execute arbitrary code. (CVE-2018-14682).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-3728-2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2018-14682");

  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:"2018/07/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:libclamav-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libclamav7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  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) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 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 (! ('14.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04', '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': '14.04', 'pkgname': 'clamav', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'clamav-base', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'clamav-milter', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'},
    {'osver': '14.04', 'pkgname': 'libclamav7', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.3'}
];

var flag = 0;
foreach 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)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  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');
}