Vulnerabilities > CVE-2014-4863 - Information Exposure vulnerability in Arris Touchstone Dg950A and Touchstone Dg950A Software

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
arris
CWE-200
nessus
metasploit

Summary

The Arris Touchstone DG950A cable modem with software 7.10.131 has an SNMP community of public, which allows remote attackers to obtain sensitive password, key, and SSID information via an SNMP request.

Vulnerable Configurations

Part Description Count
Application
Arris
1
Hardware
Arris
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Metasploit

descriptionThis module will extract WEP keys and WPA preshared keys from Arris DG950A cable modems.
idMSF:AUXILIARY/SCANNER/SNMP/ARRIS_DG950
last seen2020-03-06
modified2020-02-18
published2014-09-08
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/scanner/snmp/arris_dg950.rb
titleArris DG950A Cable Modem Wifi Enumeration

Nessus

NASL familySNMP
NASL idARRIS_TOUCHSTONE_CVE-2014-4863.NASL
descriptionIt is possible to read the plaintext password, SSID, and other sensitive information from the remote ARRIS Touchstone cable modems using an SNMP request.
last seen2020-06-01
modified2020-06-02
plugin id78921
published2014-11-07
reporterThis script is Copyright (C) 2014-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/78921
titleARRIS Touchstone DG950A SNMP Information Disclosure (CVE-2014-4863)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(78921);
  script_version("1.3");
  script_cvs_date("Date: 2018/06/27 18:42:26");

  script_cve_id("CVE-2014-4863");
  script_bugtraq_id(69631);
  script_xref(name:"CERT", value:"855836");

  script_name(english:"ARRIS Touchstone DG950A SNMP Information Disclosure (CVE-2014-4863)");
  script_summary(english:"Queries SNMP for sensitive information.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by an information disclosure
vulnerability.");
  script_set_attribute(attribute:"description", value:
"It is possible to read the plaintext password, SSID, and other
sensitive information from the remote ARRIS Touchstone cable modems
using an SNMP request.");
  script_set_attribute(attribute:"solution", value:"Disable the SNMP service on the device.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/08/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/07");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:arris:touchstone_dg950a");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");

  script_family(english:"SNMP");

  script_dependencies("arris_touchstone_cable_modem_detect.nbin", "snmp_default_communities.nasl");
  script_require_keys("Host/Arris/Touchstone/model");
  script_require_ports("SNMP/community", "SNMP/default/community");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("snmp_func.inc");
include("misc_func.inc");
include("string.inc");

# Jump out if no public community
community = get_kb_item("SNMP/community");
if (isnull(community) || community != "public")
{
  community = join(sep:" ", get_kb_list_or_exit("SNMP/default/community"));
  if (community !~ "public\s?") exit(0, "Device does not respond to the public community");
}

device    = "Arris Touchstone Cable Modem";
community = "public";  # It's specifically the public community
model     = get_kb_item_or_exit("Host/Arris/Touchstone/model");

# Limit to just this model
if ("DG950A" >!< model && !thorough_tests) audit(AUDIT_HOST_NOT, device+" DG950A");

port = get_kb_item("SNMP/port");
if (isnull(port)) port = 161;

# Port / Sock checks
if (!get_udp_port_state(port)) audit(AUDIT_PORT_CLOSED, port);

soc = open_sock_udp(port);
if (!soc) audit(AUDIT_SOCK_FAIL, port);

# Try the request
password = snmp_request(socket:soc, community:community, oid:"1.3.6.1.4.1.4491.2.4.1.1.6.1.2.0");
ssid     = snmp_request(socket:soc, community:community, oid:"1.3.6.1.4.1.4115.1.20.1.1.3.22.1.2.12");

if (!isnull(password) || !isnull(ssid))
{
  if (report_verbosity > 0)
  {
    report =
    '\n' + 'The following information was obtained from the device : ';
    if (!isnull(password)) report +=
    '\n' + '  Password : '+mask_string(password,mask_length:0);
    if (!isnull(ssid)) report +=
    '\n' + '  SSID     : '+ssid;
    security_warning(port:port, extra:report+'\n', protocol:"udp");
  }
  else security_warning(port:port, protocol:"udp");
}
else audit(AUDIT_DEVICE_NOT_VULN, device);