Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : ClamAV regression (USN-3722-3)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3722-3. 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(111374);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2018-0360", "CVE-2018-0361");
  script_xref(name:"USN", value:"3722-3");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : ClamAV regression (USN-3722-3)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"USN-3722-1 fixed vulnerabilities in ClamAV. The updated ClamAV version
removed some configuration options which caused the daemon to fail to
start in environments where the ClamAV configuration file was manually
edited. This update fixes the problem.

We apologize for the inconvenience.

It was discovered that ClamAV incorrectly handled parsing certain HWP
files. A remote attacker could use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2018-0360)

It was discovered that ClamAV incorrectly handled parsing certain PDF
files. A remote attacker could use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2018-0361).

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-3722-3");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  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:N/UI:R/S:U/C:N/I:N/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-2018-0361");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2018-0360");

  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:"2018/07/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/27");

  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: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:libclamav7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-: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 || '16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04 / 18.04', '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-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'clamav-base', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'clamav-milter', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '14.04', 'pkgname': 'libclamav7', 'pkgver': '0.100.1+dfsg-1ubuntu0.14.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav-base', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav-milter', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'clamdscan', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libclamav7', 'pkgver': '0.100.1+dfsg-1ubuntu0.16.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav-base', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav-daemon', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav-freshclam', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav-milter', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamav-testfiles', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'clamdscan', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'libclamav-dev', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'},
    {'osver': '18.04', 'pkgname': 'libclamav7', 'pkgver': '0.100.1+dfsg-1ubuntu0.18.04.2'}
];

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');
}