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nessusThis script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.FREEBSD_PKG_0C39BAFC677111E3868F0025905A4771.NASL
HistoryDec 18, 2013 - 12:00 a.m.

FreeBSD : asterisk -- multiple vulnerabilities (0c39bafc-6771-11e3-868f-0025905a4771)

2013-12-1800:00:00
This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
8

The Asterisk project reports :

A 16 bit SMS message that contains an odd message length value will cause the message decoding loop to run forever. The message buffer is not on the stack but will be overflowed resulting in corrupted memory and an immediate crash.

External control protocols, such as the Asterisk Manager Interface, often have the ability to get and set channel variables; this allows the execution of dialplan functions. Dialplan functions within Asterisk are incredibly powerful, which is wonderful for building applications using Asterisk. But during the read or write execution, certain diaplan functions do much more. For example, reading the SHELL() function can execute arbitrary commands on the system Asterisk is running on. Writing to the FILE() function can change any file that Asterisk has write access to. When these functions are executed from an external protocol, that execution could result in a privilege escalation.

#%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(71506);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2013-7100");

  script_name(english:"FreeBSD : asterisk -- multiple vulnerabilities (0c39bafc-6771-11e3-868f-0025905a4771)");
  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:
"The Asterisk project reports :

A 16 bit SMS message that contains an odd message length value will
cause the message decoding loop to run forever. The message buffer is
not on the stack but will be overflowed resulting in corrupted memory
and an immediate crash.

External control protocols, such as the Asterisk Manager Interface,
often have the ability to get and set channel variables; this allows
the execution of dialplan functions. Dialplan functions within
Asterisk are incredibly powerful, which is wonderful for building
applications using Asterisk. But during the read or write execution,
certain diaplan functions do much more. For example, reading the
SHELL() function can execute arbitrary commands on the system Asterisk
is running on. Writing to the FILE() function can change any file that
Asterisk has write access to. When these functions are executed from
an external protocol, that execution could result in a privilege
escalation."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://downloads.asterisk.org/pub/security/AST-2013-006.pdf"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://downloads.asterisk.org/pub/security/AST-2013-007.pdf"
  );
  # https://www.asterisk.org/security
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.asterisk.org/downloads/security-advisories"
  );
  # https://vuxml.freebsd.org/freebsd/0c39bafc-6771-11e3-868f-0025905a4771.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f6d7329d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk18");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/12/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/12/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/12/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 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:"asterisk10<10.12.4")) flag++;
if (pkg_test(save_report:TRUE, pkg:"asterisk11<11.6.1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"asterisk18<1.8.24.1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
VendorProductVersionCPE
freebsdfreebsdasterisk10p-cpe:/a:freebsd:freebsd:asterisk10
freebsdfreebsdasterisk11p-cpe:/a:freebsd:freebsd:asterisk11
freebsdfreebsdasterisk18p-cpe:/a:freebsd:freebsd:asterisk18
freebsdfreebsdcpe:/o:freebsd:freebsd
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