Debian DSA-4975-1 : webkit2gtk - security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-4975. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(153572);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/01/24");

  script_cve_id("CVE-2021-30858");
  script_xref(name:"IAVA", value:"2021-A-0414-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");

  script_name(english:"Debian DSA-4975-1 : webkit2gtk - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-4975
advisory.

    The following vulnerabilities have been discovered in the webkit2gtk web engine: CVE-2021-30858 An
    anonymous researcher discovered that processing maliciously crafted web content may lead to arbitrary code
    execution. Apple is aware of a report that this issue may have been actively exploited. For the oldstable
    distribution (buster), this problem has been fixed in version 2.32.4-1~deb10u1. For the stable
    distribution (bullseye), this problem has been fixed in version 2.32.4-1~deb11u1. We recommend that you
    upgrade your webkit2gtk packages. For the detailed security status of webkit2gtk please refer to its
    security tracker page at: https://security-tracker.debian.org/tracker/webkit2gtk

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/webkit2gtk");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2021/dsa-4975");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-30858");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/webkit2gtk");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/webkit2gtk");
  script_set_attribute(attribute:"solution", value:
"Upgrade the webkit2gtk packages.

For the stable distribution (bullseye), this problem has been fixed in version 2.32.4-1~deb11u1.");
  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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-30858");

  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:"2021/08/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gir1.2-javascriptcoregtk-4.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gir1.2-webkit2-4.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-18");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37-gtk2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:webkit2gtk-driver");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+|^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0 / 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '10.0', 'prefix': 'gir1.2-javascriptcoregtk-4.0', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'gir1.2-webkit2-4.0', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libjavascriptcoregtk-4.0-18', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libjavascriptcoregtk-4.0-bin', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libjavascriptcoregtk-4.0-dev', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libwebkit2gtk-4.0-37', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libwebkit2gtk-4.0-37-gtk2', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libwebkit2gtk-4.0-dev', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'libwebkit2gtk-4.0-doc', 'reference': '2.32.4-1~deb10u1'},
    {'release': '10.0', 'prefix': 'webkit2gtk-driver', 'reference': '2.32.4-1~deb10u1'},
    {'release': '11.0', 'prefix': 'gir1.2-javascriptcoregtk-4.0', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'gir1.2-webkit2-4.0', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libjavascriptcoregtk-4.0-18', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libjavascriptcoregtk-4.0-bin', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libjavascriptcoregtk-4.0-dev', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libwebkit2gtk-4.0-37', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libwebkit2gtk-4.0-37-gtk2', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libwebkit2gtk-4.0-dev', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libwebkit2gtk-4.0-doc', 'reference': '2.32.4-1~deb11u1'},
    {'release': '11.0', 'prefix': 'webkit2gtk-driver', 'reference': '2.32.4-1~deb11u1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'gir1.2-javascriptcoregtk-4.0 / gir1.2-webkit2-4.0 / etc');
}