Cisco AnyConnect Secure Mobility Client 2.x / 3.x < 3.1(5170) Multiple OpenSSL Vulnerabilities

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(76491);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/26");

  script_cve_id(
    "CVE-2014-0076",
    "CVE-2014-0195",
    "CVE-2014-0221",
    "CVE-2014-0224"
  );
  script_bugtraq_id(
    66363,
    67899,
    67900,
    67901
  );
  script_xref(name:"CERT", value:"978508");

  script_name(english:"Cisco AnyConnect Secure Mobility Client 2.x / 3.x < 3.1(5170) Multiple OpenSSL Vulnerabilities");
  script_summary(english:"Checks version of Cisco AnyConnect Client.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote host has a version of Cisco AnyConnect prior to 3.1(5170).
It is, therefore, potentially affected by the following
vulnerabilities :

  - An error exists related to the implementation of the
    Elliptic Curve Digital Signature Algorithm (ECDSA) that
    could allow nonce disclosure via the 'FLUSH+RELOAD'
    cache side-channel attack. (CVE-2014-0076)

  - A buffer overflow error exists related to invalid DTLS
    fragment handling that could lead to execution of
    arbitrary code. Note this issue only affects OpenSSL
    when used as a DTLS client or server. (CVE-2014-0195)

  - An error exists related to DTLS handshake handling that
    could lead to denial of service attacks. Note this
    issue only affects OpenSSL when used as a DTLS client.
    (CVE-2014-0221)

  - An unspecified error exists that could allow an
    attacker to cause usage of weak keying material
    leading to simplified man-in-the-middle attacks.
    (CVE-2014-0224)");
  # http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140605-openssl
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5539aa9d");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20140605.txt");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Cisco AnyConnect Secure Mobility Client 3.1(5170) or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-0195");

  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:"vuln_publication_date", value:"2014/06/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/07/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:anyconnect_secure_mobility_client");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_anyconnect_vpn_installed.nasl");
  script_require_keys("SMB/cisco_anyconnect/Installed");

  exit(0);
}

include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');

appname = 'Cisco AnyConnect Mobility VPN Client';
kb_base = 'SMB/cisco_anyconnect/';
report = '';

num_installed = get_kb_item_or_exit(kb_base + 'NumInstalled');

for (install_num = 0; install_num < num_installed; install_num++)
{
  path = get_kb_item_or_exit(kb_base + install_num + '/path');
  ver = get_kb_item_or_exit(kb_base + install_num + '/version');
  fix = '3.1.5170';
  fix_display = fix + ' (3.1(5170))';

  if (ver_compare(ver:ver, fix:fix, strict:FALSE) == -1)
  {
      report +=
        '\n  Path              : ' + path +
        '\n  Installed version : ' + ver +
        '\n  Fixed version     : ' + fix_display + '\n';
  }
}

if (report != '')
{
  port = get_kb_item('SMB/transport');
  if (!port) port = 445;

  if (report_verbosity > 0) security_warning(port:port, extra:report);
  else security_warning(port);
  exit(0);
}
else audit(AUDIT_INST_PATH_NOT_VULN, appname);