Debian dsa-6000 : libcpanel-json-xs-perl - 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-6000. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(264576);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/11");

  script_cve_id("CVE-2025-40929");

  script_name(english:"Debian dsa-6000 : libcpanel-json-xs-perl - 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 12 / 13 host has a package installed that is affected by a vulnerability as referenced in the dsa-6000
advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6000-1                   [email protected]
    https://www.debian.org/security/                     Salvatore Bonaccorso
    September 11, 2025                    https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : libcpanel-json-xs-perl
    CVE ID         : CVE-2025-40929

    Michael Hudak discovered a flaw in libcpanel-json-xs-perl, a module for
    fast and correct serialising to JSON. An integer buffer overflow causing
    a segfault when parsing specially crafted JSON, may allow an attacker to
    mount a denial-of-service attack or cause other unspecified impact.

    For the oldstable distribution (bookworm), this problem has been fixed
    in version 4.35-1+deb12u1.

    For the stable distribution (trixie), this problem has been fixed in
    version 4.39-2~deb13u1.

    We recommend that you upgrade your libcpanel-json-xs-perl packages.

    For the detailed security status of libcpanel-json-xs-perl please refer
    to its security tracker page at:
    https://security-tracker.debian.org/tracker/libcpanel-json-xs-perl

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

    Mailing list: [email protected]

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.");
  # https://security-tracker.debian.org/tracker/source-package/libcpanel-json-xs-perl
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e94bfd18");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-40929");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/libcpanel-json-xs-perl");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/libcpanel-json-xs-perl");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libcpanel-json-xs-perl packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-40929");

  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:"2025/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/09/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcpanel-json-xs-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  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:"^(12)\.[0-9]+|^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0 / 13.0', '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': '12.0', 'prefix': 'libcpanel-json-xs-perl', 'reference': '4.35-1+deb12u1'},
    {'release': '13.0', 'prefix': 'libcpanel-json-xs-perl', 'reference': '4.39-2~deb13u1'}
];

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, 'libcpanel-json-xs-perl');
}