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nessusThis script is Copyright (C) 2007-2021 and is owned by Tenable, Inc. or an Affiliate thereof.FREEBSD_PKG_0F37D765C5D411DB9F82000E0C2E438A.NASL
HistoryFeb 27, 2007 - 12:00 a.m.

FreeBSD : OpenSSL -- Multiple problems in crypto(3) (0f37d765-c5d4-11db-9f82-000e0c2e438a)

2007-02-2700:00:00
This script is Copyright (C) 2007-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
13

Several problems have been found in OpenSSL :

  • During the parsing of certain invalid ASN1 structures an error condition is mishandled, possibly resulting in an infinite loop.

  • A buffer overflow exists in the SSL_get_shared_ciphers function.

  • A NULL pointer may be dereferenced in the SSL version 2 client code.

In addition, many applications using OpenSSL do not perform any validation of the lengths of public keys being used. Impact : Servers which parse ASN1 data from untrusted sources may be vulnerable to a denial of service attack.

An attacker accessing a server which uses SSL version 2 may be able to execute arbitrary code with the privileges of that server.

A malicious SSL server can cause clients connecting using SSL version 2 to crash.

Applications which perform public key operations using untrusted keys may be vulnerable to a denial of service attack. Workaround : No workaround is available, but not all of the vulnerabilities mentioned affect all applications.

#%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(24719);
  script_version("1.22");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2006-2937", "CVE-2006-2940", "CVE-2006-3738", "CVE-2006-4343");
  script_xref(name:"FreeBSD", value:"SA-06:23.openssl");

  script_name(english:"FreeBSD : OpenSSL -- Multiple problems in crypto(3) (0f37d765-c5d4-11db-9f82-000e0c2e438a)");
  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:
"Several problems have been found in OpenSSL :

- During the parsing of certain invalid ASN1 structures an error
condition is mishandled, possibly resulting in an infinite loop.

- A buffer overflow exists in the SSL_get_shared_ciphers function.

- A NULL pointer may be dereferenced in the SSL version 2 client code.

In addition, many applications using OpenSSL do not perform any
validation of the lengths of public keys being used. Impact : Servers
which parse ASN1 data from untrusted sources may be vulnerable to a
denial of service attack.

An attacker accessing a server which uses SSL version 2 may be able to
execute arbitrary code with the privileges of that server.

A malicious SSL server can cause clients connecting using SSL version
2 to crash.

Applications which perform public key operations using untrusted keys
may be vulnerable to a denial of service attack. Workaround : No
workaround is available, but not all of the vulnerabilities mentioned
affect all applications."
  );
  # https://vuxml.freebsd.org/freebsd/0f37d765-c5d4-11db-9f82-000e0c2e438a.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a3352693"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(119, 399);

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/09/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2007/02/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/02/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2021 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:"openssl<0.9.7l_0")) flag++;
if (pkg_test(save_report:TRUE, pkg:"openssl>=0.9.8<0.9.8d_0")) 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");
VendorProductVersionCPE
freebsdfreebsdopensslp-cpe:/a:freebsd:freebsd:openssl
freebsdfreebsdcpe:/o:freebsd:freebsd