Debian dla-4303 : caja-nextcloud - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4303. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(265376);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/18");

  script_cve_id(
    "CVE-2022-39331",
    "CVE-2022-39332",
    "CVE-2022-39333",
    "CVE-2022-39334",
    "CVE-2023-28997"
  );

  script_name(english:"Debian dla-4303 : caja-nextcloud - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4303 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4303-1                [email protected]
    https://www.debian.org/lts/security/                          Abhijith PA
    September 18, 2025                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : nextcloud-desktop
    Version        : 3.1.1-2+deb11u2
    CVE ID         : CVE-2022-39331 CVE-2022-39332 CVE-2022-39333 CVE-2022-39334
                     CVE-2023-28997

    Multiple vulnerabilities were discovered in nextcloud-desktop,
    nextcloud folder synchronization tool.

    CVE-2022-39331

        An attacker can inject arbitrary HyperText Markup Language into
        the Desktop Client application in the notifications.

    CVE-2022-39332

        An attacker can inject arbitrary HyperText Markup Language into
        the Desktop Client application via user status and information.

    CVE-2022-39333

        An attacker can inject arbitrary HyperText Markup Language into
        the Desktop Client application.

    CVE-2022-39334

        A CLI utility called nextcloudcmd which is sometimes used for
        automated scripting and headless servers would incorrectly trust
        invalid TLS certificates, which may enable a Man-in-the-middle
        attack that exposes sensitive data or credentials to a network
        attacker.

    CVE-2023-28997

        A malicious server administrator can recover and modify the
        contents of end-to-end encrypted files.

    For Debian 11 bullseye, these problems have been fixed in version
    3.1.1-2+deb11u2.

    For Debian 11 bullseye, these problems have been fixed in version
    3.1.1-2+deb11u2.

    We recommend that you upgrade your nextcloud-desktop packages.

    For the detailed security status of nextcloud-desktop please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/nextcloud-desktop

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/nextcloud-desktop
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1c0ae60e");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39331");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39332");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39333");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39334");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-28997");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/nextcloud-desktop");
  script_set_attribute(attribute:"solution", value:
"Upgrade the caja-nextcloud packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/C:C/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:H/UI:N/S:U/C:H/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-2023-28997");

  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:"2022/11/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:caja-nextcloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dolphin-nextcloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnextcloudsync-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnextcloudsync0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nautilus-nextcloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nemo-nextcloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nextcloud-desktop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nextcloud-desktop-cmd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nextcloud-desktop-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nextcloud-desktop-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:nextcloud-desktop-l10n");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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) 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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 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': '11.0', 'prefix': 'caja-nextcloud', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dolphin-nextcloud', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'libnextcloudsync-dev', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'libnextcloudsync0', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nautilus-nextcloud', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nemo-nextcloud', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nextcloud-desktop', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nextcloud-desktop-cmd', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nextcloud-desktop-common', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nextcloud-desktop-doc', 'reference': '3.1.1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'nextcloud-desktop-l10n', 'reference': '3.1.1-2+deb11u2'}
];

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, 'caja-nextcloud / dolphin-nextcloud / libnextcloudsync-dev / etc');
}