FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) - Nessus

Critical Plugin ID: 36518

This page contains detailed information about the FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 36518
Name: FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12)
Filename: freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl
Vulnerability Published: 2004-05-20
This Plugin Published: 2009-04-23
Last Modification Time: 2021-01-06
Plugin Version: 1.19
Plugin Type: local
Plugin Family: FreeBSD Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/FreeBSD/pkg_info, Host/FreeBSD/release, Host/local_checks_enabled

Vulnerability Information

Severity: Critical
Vulnerability Published: 2004-05-20
Patch Published: 2004-06-09
CVE [?]: CVE-2004-0541
CPE [?]: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:squid

Synopsis

The remote FreeBSD host is missing a security-related update.

Description

Remote exploitation of a buffer overflow vulnerability in the NTLM authentication helper routine of the Squid Web Proxy Cache could allow a remote attacker to execute arbitrary code. A remote attacker can compromise a target system if the Squid Proxy is configured to use the NTLM authentication helper. The attacker can send an overly long password to overflow the buffer and execute arbitrary code.

Solution

Update the affected package.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) vulnerability:

Metasploit: exploit/linux/proxy/squid_ntlm_authenticate
[Squid NTLM Authenticate Overflow]
Exploit-DB: exploits/multiple/remote/9951.rb
[EDB-9951: Squid 2.5.x/3.x - NTLM Buffer Overflow (Metasploit)]
Exploit-DB: exploits/linux/remote/16847.rb
[EDB-16847: Squid - NTLM (Authenticated) Overflow (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.3 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.3 (High)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    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.
# 
# 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
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(36518);
  script_version("1.19");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2004-0541");
  script_bugtraq_id(10500);
  script_xref(name:"Secunia", value:"11804");

  script_name(english:"FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Remote exploitation of a buffer overflow vulnerability in the NTLM
authentication helper routine of the Squid Web Proxy Cache could allow
a remote attacker to execute arbitrary code. A remote attacker can
compromise a target system if the Squid Proxy is configured to use the
NTLM authentication helper. The attacker can send an overly long
password to overflow the buffer and execute arbitrary code."
  );
  # http://www.idefense.com/application/poi/display?id=107&type=vulnerabilities&flashstatus=false
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f742b61a"
  );
  # http://www.squid-cache.org/bugs/show_bug.cgi?id=998
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.squid-cache.org/show_bug.cgi?id=998"
  );
  # https://vuxml.freebsd.org/freebsd/6f955451-ba54-11d8-b88c-000d610a3b12.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a96e4c6c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  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:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Squid NTLM Authenticate Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2004/05/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2004/06/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

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

  exit(0);
}


include("audit.inc");
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);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"squid<2.5.5_9")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl

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How to Run

Here is how to run the FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select FreeBSD Local Security Checks plugin family.
On the right side table select FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) plugin ID 36518.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

10500

Secunia Advisory:

11804

See also:

Similar and related Nessus plugins:

14524 - GLSA-200406-13 : Squid: NTLM authentication helper buffer overflow
14158 - Mandrake Linux Security Advisory : squid (MDKSA-2004:059)
12504 - RHEL 3 : squid (RHSA-2004:242)
12294 - Squid ntlm_check_auth Function NTLM Authentication Helper Password Handling Remote Overflow
13832 - SuSE-SA:2004:016: squid

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file freebsd_pkg_6f955451ba5411d8b88c000d610a3b12.nasl version 1.19. For more plugins, visit the Nessus Plugin Library.

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FreeBSD : Buffer overflow in Squid NTLM authentication helper (6f955451-ba54-11d8-b88c-000d610a3b12) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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