FreeBSD : proftpd -- Remote Code Execution Vulnerability (cca97f5f-7435-11db-91de-0008743bf21a)

2006-11-20T00:00:00
ID FREEBSD_PKG_CCA97F5F743511DB91DE0008743BF21A.NASL
Type nessus
Reporter Tenable
Modified 2013-06-22T00:00:00

Description

FrSIRT reports :

A vulnerability has been identified in ProFTPD, which could be exploited by attackers to cause a denial of service or execute arbitrary commands. This flaw is due to a buffer overflow error in the 'main.c' file where the 'cmd_buf_size' size of the buffer used to handle FTP commands sent by clients is not properly set to the size configured via the 'CommandBufferSize' directive, which could be exploited by attackers to compromise a vulnerable server via a specially crafted FTP command.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2013 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("compat.inc");

if (description)
{
  script_id(23667);
  script_version("$Revision: 1.9 $");
  script_cvs_date("$Date: 2013/06/22 00:10:42 $");

  script_name(english:"FreeBSD : proftpd -- Remote Code Execution Vulnerability (cca97f5f-7435-11db-91de-0008743bf21a)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"FrSIRT reports :

A vulnerability has been identified in ProFTPD, which could be
exploited by attackers to cause a denial of service or execute
arbitrary commands. This flaw is due to a buffer overflow error in the
'main.c' file where the 'cmd_buf_size' size of the buffer used to
handle FTP commands sent by clients is not properly set to the size
configured via the 'CommandBufferSize' directive, which could be
exploited by attackers to compromise a vulnerable server via a
specially crafted FTP command."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.frsirt.com/english/advisories/2006/4451"
  );
  # http://www.freebsd.org/ports/portaudit/cca97f5f-7435-11db-91de-0008743bf21a.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?fe9abae7"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  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:"p-cpe:/a:freebsd:freebsd:proftpd-mysql");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/11/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2013 Tenable Network Security, Inc.");
  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<=1.3.0_2")) flag++;
if (pkg_test(save_report:TRUE, pkg:"proftpd-mysql<=1.3.0_2")) 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");