FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b) - Nessus
Critical Plugin ID: 50700This page contains detailed information about the FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 50700
Name: FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b)
Filename: freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.nasl
Vulnerability Published: 2010-11-02
This Plugin Published: 2010-11-24
Last Modification Time: 2021-01-06
Plugin Version: 1.13
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: 2010-11-02
Patch Published: 2010-11-23
CVE [?]: CVE-2010-4221
CPE [?]: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:proftpd
Synopsis
The remote FreeBSD host is missing a security-related update.
Description
Tippingpoint reports :
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of ProFTPD. Authentication is not required to exploit this vulnerability.
The flaw exists within the proftpd server component which listens by default on TCP port 21. When reading user input if a TELNET_IAC escape sequence is encountered the process miscalculates a buffer length counter value allowing a user controlled copy of data to a stack buffer. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the proftpd process.
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, GitHub, Core Impact)
Exploit Ease: Exploits are available
Here's the list of publicly known exploits and PoCs for verifying the FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b) vulnerability:
- Metasploit: exploit/linux/ftp/proftp_telnet_iac
[ProFTPD 1.3.2rc3 - 1.3.3b Telnet IAC Buffer Overflow (Linux)] - Metasploit: exploit/freebsd/ftp/proftp_telnet_iac
[ProFTPD 1.3.2rc3 - 1.3.3b Telnet IAC Buffer Overflow (FreeBSD)] - Exploit-DB: exploits/linux/remote/16851.rb
[EDB-16851: ProFTPd 1.3.2 rc3 < 1.3.3b (Linux) - Telnet IAC Buffer Overflow (Metasploit)] - Exploit-DB: exploits/linux/remote/16878.rb
[EDB-16878: ProFTPd 1.3.2 rc3 < 1.3.3b (FreeBSD) - Telnet IAC Buffer Overflow (Metasploit)] - GitHub: https://github.com/5l1v3r1/0rion-Framework
[CVE-2010-4221] - GitHub: https://github.com/M31MOTH/cve-2010-4221
[CVE-2010-4221: This exploit was written to study some concepts, enjoy!] - GitHub: https://github.com/ankh2054/python-exploits
[CVE-2010-4221] - GitHub: https://github.com/mudongliang/LinuxFlaw/tree/master/CVE-2010-4221
[CVE-2010-4221] - GitHub: https://github.com/vasanth-tamil/ctf-writeups
[CVE-2010-4221]
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
This is the freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.nasl nessus plugin source code. This script is Copyright (C) 2010-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
#%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(50700);
script_version("1.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2010-4221");
script_bugtraq_id(44562);
script_name(english:"FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b)");
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:
"Tippingpoint reports :
This vulnerability allows remote attackers to execute arbitrary code
on vulnerable installations of ProFTPD. Authentication is not required
to exploit this vulnerability.
The flaw exists within the proftpd server component which listens by
default on TCP port 21. When reading user input if a TELNET_IAC escape
sequence is encountered the process miscalculates a buffer length
counter value allowing a user controlled copy of data to a stack
buffer. A remote attacker can exploit this vulnerability to execute
arbitrary code under the context of the proftpd process."
);
# http://www.zerodayinitiative.com/advisories/ZDI-10-229/
script_set_attribute(
attribute:"see_also",
value:"https://www.zerodayinitiative.com/advisories/ZDI-10-229/"
);
# https://vuxml.freebsd.org/freebsd/533d20e7-f71f-11df-9ae1-000bcdf0a03b.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?8703e97b"
);
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:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'ProFTPD 1.3.2rc3 - 1.3.3b Telnet IAC Buffer Overflow (Linux)');
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:proftpd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"vuln_publication_date", value:"2010/11/02");
script_set_attribute(attribute:"patch_publication_date", value:"2010/11/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/11/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2010-2021 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:"proftpd<1.3.3c")) 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_533d20e7f71f11df9ae1000bcdf0a03b.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.nasl
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How to Run
Here is how to run the FreeBSD : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b) 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 : proftpd -- remote code execution vulnerability (533d20e7-f71f-11df-9ae1-000bcdf0a03b) plugin ID 50700.
- 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_533d20e7f71f11df9ae1000bcdf0a03b.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.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_533d20e7f71f11df9ae1000bcdf0a03b.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_533d20e7f71f11df9ae1000bcdf0a03b.nasl -t <IP/HOST>
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References
BID | SecurityFocus Bugtraq ID: See also:
- https://www.tenable.com/plugins/nessus/50700
- https://www.zerodayinitiative.com/advisories/ZDI-10-229/
- http://www.nessus.org/u?8703e97b
- https://vulners.com/nessus/FREEBSD_PKG_533D20E7F71F11DF9AE1000BCDF0A03B.NASL
- 50551 - Fedora 14 : proftpd-1.3.3c-1.fc14 (2010-17091)
- 50553 - Fedora 13 : proftpd-1.3.3c-1.fc13 (2010-17098)
- 50568 - Fedora 12 : proftpd-1.3.3c-1.fc12 (2010-17220)
- 70111 - GLSA-201309-15 : ProFTPD: Multiple vulnerabilities
- 50571 - Mandriva Linux Security Advisory : proftpd (MDVSA-2010:227)
- 50544 - ProFTPD < 1.3.3c Multiple Vulnerabilities
- 70446 - ProFTPD TELNET IAC Escape Sequence Remote Buffer Overflow
- 52660 - Debian DSA-2191-1 : proftpd-dfsg - several vulnerabilities
- 50436 - Slackware 11.0 / 12.0 / 12.1 / 12.2 / 13.0 / 13.1 / current : proftpd (SSA:2010-305-03)
Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file freebsd_pkg_533d20e7f71f11df9ae1000bcdf0a03b.nasl version 1.13. For more plugins, visit the Nessus Plugin Library.
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