Debian dsa-5666 : flatpak - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-5666. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(193600);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/19");

  script_cve_id("CVE-2024-32462");

  script_name(english:"Debian dsa-5666 : flatpak - 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 11 / 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5666
advisory.

  - Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in
    versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute
    arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be
    given a command to run in the specified Flatpak app, optionally along with some arguments. However it is
    possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an
    arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from
    within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect
    of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to
    pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since
    bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-
    desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create
    .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9,
    1.12.9, and 1.14.6. (CVE-2024-32462)

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/flatpak");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-32462");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/flatpak");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/flatpak");
  script_set_attribute(attribute:"solution", value:
"Upgrade the flatpak packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:L/UI:N/S:C/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-32462");

  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:"2024/04/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:flatpak");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:flatpak-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gir1.2-flatpak-1.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libflatpak-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libflatpak-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libflatpak0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 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:"^(11)\.[0-9]+|^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0 / 12.0', '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': '11.0', 'prefix': 'flatpak', 'reference': '1.10.8-0+deb11u2'},
    {'release': '11.0', 'prefix': 'flatpak-tests', 'reference': '1.10.8-0+deb11u2'},
    {'release': '11.0', 'prefix': 'gir1.2-flatpak-1.0', 'reference': '1.10.8-0+deb11u2'},
    {'release': '11.0', 'prefix': 'libflatpak-dev', 'reference': '1.10.8-0+deb11u2'},
    {'release': '11.0', 'prefix': 'libflatpak-doc', 'reference': '1.10.8-0+deb11u2'},
    {'release': '11.0', 'prefix': 'libflatpak0', 'reference': '1.10.8-0+deb11u2'},
    {'release': '12.0', 'prefix': 'flatpak', 'reference': '1.14.4-1+deb12u1'},
    {'release': '12.0', 'prefix': 'flatpak-tests', 'reference': '1.14.4-1+deb12u1'},
    {'release': '12.0', 'prefix': 'gir1.2-flatpak-1.0', 'reference': '1.14.4-1+deb12u1'},
    {'release': '12.0', 'prefix': 'libflatpak-dev', 'reference': '1.14.4-1+deb12u1'},
    {'release': '12.0', 'prefix': 'libflatpak-doc', 'reference': '1.14.4-1+deb12u1'},
    {'release': '12.0', 'prefix': 'libflatpak0', 'reference': '1.14.4-1+deb12u1'}
];

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_HOLE,
    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, 'flatpak / flatpak-tests / gir1.2-flatpak-1.0 / libflatpak-dev / etc');
}