Ubuntu 16.04 ESM / 18.04 ESM : GLib vulnerabilities (USN-6165-2)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6165-2. 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(183410);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/19");

  script_cve_id(
    "CVE-2023-29499",
    "CVE-2023-32611",
    "CVE-2023-32636",
    "CVE-2023-32643",
    "CVE-2023-32665"
  );
  script_xref(name:"USN", value:"6165-2");

  script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM : GLib vulnerabilities (USN-6165-2)");

  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 / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-6165-2 advisory.

  - A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the
    expected format, leading to denial of service. (CVE-2023-29499)

  - A flaw was found in GLib. GVariant deserialization is vulnerable to a slowdown issue where a crafted
    GVariant can cause excessive processing, leading to denial of service. (CVE-2023-32611)

  - A flaw was found in glib, where the gvariant deserialization code is vulnerable to a denial of service
    introduced by additional input validation added to resolve CVE-2023-29499. The offset table validation may
    be very slow. This bug does not affect any released version of glib but does affect glib distributors who
    followed the guidance of glib developers to backport the initial fix for CVE-2023-29499. (CVE-2023-32636)

  - A flaw was found in GLib. The GVariant deserialization code is vulnerable to a heap buffer overflow
    introduced by the fix for CVE-2023-32665. This bug does not affect any released version of GLib, but does
    affect GLib distributors who followed the guidance of GLib developers to backport the initial fix for
    CVE-2023-32665. (CVE-2023-32643)

  - A flaw was found in GLib. GVariant deserialization is vulnerable to an exponential blowup issue where a
    crafted GVariant can cause excessive processing, leading to denial of service. (CVE-2023-32665)

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-6165-2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  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:H/I:H/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-2023-32643");

  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:"2023/06/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/19");

  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:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-0-refdbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-dev-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libglib2.0-tests");
  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) 2023 Canonical, Inc. / NASL script (C) 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 (! ('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': 'libglib2.0-0', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '16.04', 'pkgname': 'libglib2.0-0-refdbg', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '16.04', 'pkgname': 'libglib2.0-bin', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '16.04', 'pkgname': 'libglib2.0-data', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '16.04', 'pkgname': 'libglib2.0-dev', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '16.04', 'pkgname': 'libglib2.0-tests', 'pkgver': '2.48.2-0ubuntu4.8+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-0', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-bin', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-data', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-dev', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-dev-bin', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'},
    {'osver': '18.04', 'pkgname': 'libglib2.0-tests', 'pkgver': '2.56.4-0ubuntu0.18.04.9+esm3'}
];

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_HOLE,
    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, 'libglib2.0-0 / libglib2.0-0-refdbg / libglib2.0-bin / etc');
}