Ubuntu 16.04 ESM : Vim vulnerabilities (USN-5775-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5775-1. 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(168642);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2022-2345",
    "CVE-2022-2581",
    "CVE-2022-3099",
    "CVE-2022-3256",
    "CVE-2022-3324",
    "CVE-2022-3591"
  );
  script_xref(name:"USN", value:"5775-1");
  script_xref(name:"IAVB", value:"2022-B-0049-S");
  script_xref(name:"IAVB", value:"2022-B-0058-S");
  script_xref(name:"IAVB", value:"2023-B-0016-S");

  script_name(english:"Ubuntu 16.04 ESM : Vim vulnerabilities (USN-5775-1)");

  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 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-5775-1 advisory.

    It was discovered that Vim uses freed memory in recurisve substitution of specially crafted patterns. An
    attacker could possbly use this to crash Vim and cause denial of service. (CVE-2022-2345)

    It was discovered that Vim makes illegal memory calls when patterns start with an illegal byte. An
    attacker could possibly use this to crash Vim, access or modify memory, or execute arbitrary commands.
    (CVE-2022-2581)

    It was discovered that Vim could be made to crash when parsing invalid line numbers. An attacker could
    possbly use this to crash Vim and cause denial of service. (CVE-2022-3099)

    It was discovered that Vim uses freed memory when autocmd changes a mark. An attacker could possbly use
    this to crash Vim and cause denial of service. (CVE-2022-3256)

    It was discovered the Vim uses an incorrect array index when window width is negative. A local attacker
    could possbly use this to crash Vim and cause denial of service. (CVE-2022-3324)

    It was discoverd that certain buffers could be sent to the wrong window. An attacker with local access
    could use this to send messages to the wrong window. (CVE-2022-3591)

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-5775-1");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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-2022-2345");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-3591");

  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:"2022/07/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/12/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
  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-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:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2022-2024 Canonical, Inc. / NASL script (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.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)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '16.04', 'pkgname': 'vim', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-athena', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-athena-py2', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-common', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gnome', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gnome-py2', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gtk', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gtk-py2', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gtk3-py2', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-nox', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-nox-py2', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-runtime', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'vim-tiny', 'pkgver': '2:7.4.1689-3ubuntu1.5+esm14', 'ubuntu_pro': TRUE}
];

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'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  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, 'vim / vim-athena / vim-athena-py2 / vim-common / vim-gnome / etc');
}