Ubuntu 18.04 ESM / 20.04 LTS / 22.04 LTS : Vim vulnerabilities (USN-6420-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6420-1. 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(182769);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/28");

  script_cve_id(
    "CVE-2022-3234",
    "CVE-2022-3235",
    "CVE-2022-3256",
    "CVE-2022-3278",
    "CVE-2022-3297",
    "CVE-2022-3324",
    "CVE-2022-3352",
    "CVE-2022-3491",
    "CVE-2022-3520",
    "CVE-2022-3591",
    "CVE-2022-3705",
    "CVE-2022-4292",
    "CVE-2022-4293"
  );
  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_xref(name:"USN", value:"6420-1");

  script_name(english:"Ubuntu 18.04 ESM / 20.04 LTS / 22.04 LTS : Vim vulnerabilities (USN-6420-1)");

  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 18.04 ESM / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6420-1 advisory.

    It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could
    trick a user into opening a specially crafted file, it could cause Vim to crash, or possibly execute
    arbitrary code. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-3235, CVE-2022-3278, CVE-2022-3297,
    CVE-2022-3491)

    It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could
    trick a user into opening a specially crafted file, it could cause Vim to crash, or possibly execute
    arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.
    (CVE-2022-3352, CVE-2022-4292)

    It was discovered that Vim incorrectly handled memory when replacing in virtualedit mode. An attacker
    could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS,
    Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-3234)

    It was discovered that Vim incorrectly handled memory when autocmd changes mark. An attacker could
    possibly use this issue to cause a denial of service. (CVE-2022-3256)

    It was discovered that Vim did not properly perform checks on array index with negative width window. An
    attacker could possibly use this issue to cause a denial of service, or execute arbitrary code.
    (CVE-2022-3324)

    It was discovered that Vim did not properly perform checks on a put command column with a visual block. An
    attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04
    LTS, and Ubuntu 22.04 LTS. (CVE-2022-3520)

    It was discovered that Vim incorrectly handled memory when using autocommand to open a window. An attacker
    could possibly use this issue to cause a denial of service. (CVE-2022-3591)

    It was discovered that Vim incorrectly handled memory when updating buffer of the component autocmd
    handler. An attacker could possibly use this issue to cause a denial of service. This issue only affected
    Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-3705)

    It was discovered that Vim incorrectly handled floating point comparison with incorrect operator. An
    attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04
    LTS. and Ubuntu 22.04 LTS. (CVE-2022-4293)

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-6420-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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-2022-3520");

  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:"2022/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
  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:"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-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-gtk");
  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-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-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:"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) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 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 (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04', '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': '18.04', 'pkgname': 'vim', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-athena', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-common', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-gnome', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-gtk', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-nox', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-runtime', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'vim-tiny', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'xxd', 'pkgver': '2:8.0.1453-1ubuntu1.13+esm5', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'vim', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-athena', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-common', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-gtk', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-nox', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-runtime', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'vim-tiny', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'xxd', 'pkgver': '2:8.1.2269-1ubuntu5.18', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-athena', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-common', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-gtk', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-gtk3', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-gui-common', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-nox', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-runtime', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'vim-tiny', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'xxd', 'pkgver': '2:8.2.3995-1ubuntu2.12', 'ubuntu_pro': FALSE}
];

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_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-common / vim-gnome / vim-gtk / vim-gtk3 / etc');
}