FreeBSD : samba -- buffer overflow in Heimdal unwrap_des3() (1c5f3fd7-54bf-11ed-8d1e-005056a311d1)

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2021 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
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#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
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# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
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#

include('compat.inc');

if (description)
{
  script_id(166525);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/23");

  script_cve_id("CVE-2022-3437");
  script_xref(name:"IAVA", value:"2022-A-0447-S");

  script_name(english:"FreeBSD : samba -- buffer overflow in Heimdal unwrap_des3() (1c5f3fd7-54bf-11ed-8d1e-005056a311d1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the 1c5f3fd7-54bf-11ed-8d1e-005056a311d1 advisory.

  - The DES (for Samba 4.11 and earlier) and Triple-DES decryption routines in the Heimdal GSSAPI library
    allow a length-limited write buffer overflow on malloc() allocated memory when presented with a
    maliciously small packet. Examples of where Samba can use GSSAPI include the client and fileserver for
    SMB1 (unix extensions), DCE/RPC in all use cases and LDAP in the Active Directory Domain Controller.
    However not all Samba installations are impacted! Samba is often compiled to use the system MIT Kerberos
    using the --with-system-mitkrb5 argument and these installations are not impacted, as the vulnerable code
    is not compiled into Samba. However when, as is the default, Samba is compiled to use the internal Heimdal
    Kerberos library the vulnerable unwrap_des3() is used. (The single-DES use case, along with the equally
    vulnerable unwrap_des() is only compiled into Samba 4.11 and earlier). The primary use of Samba's internal
    Heimdal is for the Samba AD DC, but this vulnerability does impact fileserver deployments built with the
    default build options. (CVE-2022-3437)

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://www.samba.org/samba/security/CVE-2022-3437.html");
  # https://vuxml.freebsd.org/freebsd/1c5f3fd7-54bf-11ed-8d1e-005056a311d1.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6ba59a8a");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  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:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-3437");

  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:"2022/10/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/10/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:samba412");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:samba413");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:samba416");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("freebsd_package.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


var flag = 0;

var packages = [
    'samba412<4.12.16',
    'samba413<4.13.17_4',
    'samba416<4.16.6'
];

foreach var package( packages ) {
    if (pkg_test(save_report:TRUE, pkg: package)) flag++;
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : pkg_report_get()
  );
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");