Ubuntu 16.04 LTS / 18.04 LTS : Vim vulnerabilities (USN-4309-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4309-1. 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(134856);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2017-11109",
    "CVE-2017-5953",
    "CVE-2017-6349",
    "CVE-2017-6350",
    "CVE-2018-20786",
    "CVE-2019-20079"
  );
  script_xref(name:"USN", value:"4309-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS : Vim vulnerabilities (USN-4309-1)");

  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 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-4309-1 advisory.

    It was discovered that Vim incorrectly handled certain sources. An attacker could possibly use this issue
    to cause a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04
    LTS (CVE-2017-11109)

    It was discovered that Vim incorrectly handled certain files. An attacker could possibly use this issue to
    execute arbitrary code. This issue only affected Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. (CVE-2017-5953)

    It was discovered that Vim incorrectly handled certain inputs. An attacker could possibly use this issue
    to cause a denial of service. This issue only affected Ubuntu 16.06 LTS. (CVE-2018-20786)

    It was discovered that Vim incorrectly handled certain inputs. An attacker could possibly use this issue
    to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and
    Ubuntu 19.10. (CVE-2019-20079)

    It was discovered that Vim incorrectly handled certain files. An attacker could possibly use this issue to
    execute arbitrary code. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS.
    (CVE-2017-6349, CVE-2017-6350)

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-4309-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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-2017-6350");

  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:"2017/02/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-athena");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-athena-py2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gnome-py2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gtk-py2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gtk3-py2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-gui-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-lesstif");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-nox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-nox-py2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-runtime");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:vim-tiny");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xxd");
  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) 2020-2024 Canonical, Inc. / NASL script (C) 2020-2024 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 (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 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': '16.04', 'pkgname': 'vim', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-athena', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-athena-py2', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-common', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gnome', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gnome-py2', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gtk', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gtk-py2', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gtk3-py2', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-nox', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-nox-py2', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-runtime', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '16.04', 'pkgname': 'vim-tiny', 'pkgver': '2:7.4.1689-3ubuntu1.4'},
    {'osver': '18.04', 'pkgname': 'vim', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-athena', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-common', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-gnome', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-gtk', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-nox', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-runtime', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'vim-tiny', 'pkgver': '2:8.0.1453-1ubuntu1.3'},
    {'osver': '18.04', 'pkgname': 'xxd', 'pkgver': '2:8.0.1453-1ubuntu1.3'}
];

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_HOLE,
    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, 'vim / vim-athena / vim-athena-py2 / vim-common / vim-gnome / etc');
}