Ubuntu 20.04 LTS / 22.04 LTS : cups-filters vulnerabilities (USN-7043-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7043-1. 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(207840);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/27");

  script_cve_id("CVE-2024-47076", "CVE-2024-47176");
  script_xref(name:"USN", value:"7043-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS : cups-filters vulnerabilities (USN-7043-1)");

  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 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-7043-1 advisory.

    Simone Margaritelli discovered that the cups-filters cups-browsed component could be used to create
    arbitrary printers from outside the local network. In combination with issues in other printing
    components, a remote attacker could possibly use this issue to connect to a system, created manipulated
    PPD files, and execute arbitrary code when a printer is used. This update disables support for the legacy
    CUPS printer discovery protocol. (CVE-2024-47176)

    Simone Margaritelli discovered that cups-filters incorrectly sanitized IPP data when creating PPD files. A
    remote attacker could possibly use this issue to manipulate PPD files and execute arbitrary code when a
    printer is used. (CVE-2024-47076)

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-7043-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  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:C/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-47076");

  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:"2024/09/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:cups-browsed");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:cups-filters");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:cups-filters-core-drivers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcupsfilters-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcupsfilters1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libfontembed-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libfontembed1");
  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) 2024 Canonical, Inc. / NASL script (C) 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 (! ('20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 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 pkgs = [
    {'osver': '20.04', 'pkgname': 'cups-browsed', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'cups-filters', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'cups-filters-core-drivers', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'libcupsfilters-dev', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'libcupsfilters1', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'libfontembed-dev', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '20.04', 'pkgname': 'libfontembed1', 'pkgver': '1.27.4-1ubuntu0.3'},
    {'osver': '22.04', 'pkgname': 'cups-browsed', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'cups-filters', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'cups-filters-core-drivers', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'libcupsfilters-dev', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'libcupsfilters1', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'libfontembed-dev', 'pkgver': '1.28.15-0ubuntu1.3'},
    {'osver': '22.04', 'pkgname': 'libfontembed1', 'pkgver': '1.28.15-0ubuntu1.3'}
];

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, 'cups-browsed / cups-filters / cups-filters-core-drivers / etc');
}