Debian dla-4232 : freeradius - 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-4232. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(240656);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/06/26");

  script_cve_id("CVE-2022-41859", "CVE-2022-41860", "CVE-2022-41861");

  script_name(english:"Debian dla-4232 : freeradius - 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-4232 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4232-1                [email protected]
    https://www.debian.org/lts/security/                          Abhijith PA
    June 26, 2025                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : freeradius
    Version        : 3.0.21+dfsg-2.2+deb11u2
    CVE ID         : CVE-2022-41859 CVE-2022-41860 CVE-2022-41861

    Several security vulnerabilities have been discovered in freeradius, a
    highly configurable RADIUS server.


    CVE-2022-41859

         The EAP-PWD function compute_password_element() leaks information
         about the password which allows an attacker to substantially
         reduce the size of an offline dictionary attack.

    CVE-2022-41860

        When an EAP-SIM supplicant sends an unknown SIM option, the server
        will try to look that option up in the internal dictionaries. This
        lookup will fail, but the SIM code will not check for that
        failure. Instead, it will dereference a NULL pointer, and cause
        the server to crash.

    CVE-2022-41861

        A malicious RADIUS client or home server can send a malformed
        abinary attribute which can cause the server to crash. This crash
        is not exploitable by end users. Only systems which are in the
        RADIUS circle of trust can send these malformed attributes to a
        server.

    For Debian 11 bullseye, these problems have been fixed in version
    3.0.21+dfsg-2.2+deb11u2.

    We recommend that you upgrade your freeradius packages.

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

    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.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/freeradius");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-41859");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-41860");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-41861");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/freeradius");
  script_set_attribute(attribute:"solution", value:
"Upgrade the freeradius packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N/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-2022-41859");

  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:"2022/12/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-config");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-dhcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-iodbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-memcached");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-python3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-redis");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-rest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeradius-yubikey");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfreeradius-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfreeradius3");
  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': 'freeradius', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-common', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-config', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-dhcp', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-iodbc', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-krb5', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-ldap', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-memcached', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-mysql', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-postgresql', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-python3', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-redis', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-rest', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-utils', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'freeradius-yubikey', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'libfreeradius-dev', 'reference': '3.0.21+dfsg-2.2+deb11u2'},
    {'release': '11.0', 'prefix': 'libfreeradius3', 'reference': '3.0.21+dfsg-2.2+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, 'freeradius / freeradius-common / freeradius-config / freeradius-dhcp / etc');
}