Debian dla-4265 : modsecurity-crs - 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-4265. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(246422);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/08");

  script_cve_id(
    "CVE-2020-22669",
    "CVE-2022-39955",
    "CVE-2022-39956",
    "CVE-2022-39957",
    "CVE-2022-39958"
  );

  script_name(english:"Debian dla-4265 : modsecurity-crs - 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 a package installed that is affected by multiple vulnerabilities as referenced in the
dla-4265 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4265-1                [email protected]
    https://www.debian.org/lts/security/                          Adrian Bunk
    August 08, 2025                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : modsecurity-crs
    Version        : 3.3.4-1~deb11u1
    CVE ID         : CVE-2020-22669 CVE-2022-39955 CVE-2022-39956 CVE-2022-39957
                     CVE-2022-39958
    Debian Bug     : 1021137

    Multiple issues have been fixed in modsecurity-crs, a set of generic
    attack detection rules for use with ModSecurity.

    CVE-2020-22669

        SQL injection bypass

    CVE-2022-39955

        Partial rule set bypass

    CVE-2022-39956

        Partial rule set bypass

    CVE-2022-39957

        Response body bypass

    CVE-2022-39958

        Response body bypass

    For Debian 11 bullseye, these problems have been fixed in version
    3.3.4-1~deb11u1.

    We recommend that you upgrade your modsecurity-crs packages.

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

    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/modsecurity-crs
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?77fb0971");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22669");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39955");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39956");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39957");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39958");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/modsecurity-crs");
  script_set_attribute(attribute:"solution", value:
"Upgrade the modsecurity-crs packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-39956");

  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:"2022/09/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:modsecurity-crs");
  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': 'modsecurity-crs', 'reference': '3.3.4-1~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_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, 'modsecurity-crs');
}