Executive Summary

Summary
Title Dahua Security DVRs contain multiple vulnerabilities
Informations
Name VU#800094 First vendor Publication 2013-09-13
Vendor VU-CERT Last vendor Modification 2013-09-13
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Vulnerability Note VU#800094

Dahua Security DVRs contain multiple vulnerabilities

Original Release date: 13 Sep 2013 | Last revised: 13 Sep 2013

Overview

Digital video recorders (DVR) produced by Dahua Technology Co., Ltd. contain multiple vulnerabilities that could allow a remote attacker to gain privileged access to the devices.

Description

Dahua Technologies Co., Ltd. produces DVR appliances that contain multiple vulnerabilities.

CWE-798: Use of Hard-coded Credentials - CVE-2013-3612
All DVRs of the same series ship with the same default root password on a read-only partition. Therefore, the root password can only be changed by flashing the firmware. Additionally, a separate hard-coded remote backdoor account exists that can be used to control cameras and other system components remotely. It is only accessible if authorization is done through ActiveX or the stand-alone client. Additionally, a hash of the current date can be used as a master password to gain access to the system and reset the administrator's password.

CWE-294: Authentication Bypass by Capture-reply - CVE-2013-3613
The DVR appliance accepts UPnP requests from external untrusted devices. This can cause the telnet port of a DVR appliance to be automatically forwarded and accessible by external parties. These default conditions could allow an external attacker to detect the device and authenticate using the hard-coded credentials.

CWE-521: Weak Password Requirements - CVE-2013-3614
The device enforces insufficient password requirements. User passwords are limited to only six characters in length, making them computationally feasible to discover using brute-force methods.

CWE-916: Use of Password Hash with Insufficient Computational Effort - CVE-2013-3615
User passwords are hashed with a weak 48-bit algorithm, and are therefore susceptible to brute-force attacks within a reasonable amount of time.

The CVSS score reflects CVE-2013-3612.

Impact

An unauthenticated remote attacker could gain privileged access to the device and compromise the confidentiality and integrity of its data. Additionally, the attacker could cause a denial-of-service.

Solution

We are currently unaware of a practical solution to this problem. Please consider the following workarounds.

Restrict Access

If possible, restrict access to the device using IP access lists and block UPnP requests from untrusted external devices.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
Dahua SecurityUnknown09 Jul 201309 Sep 2013
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

GroupScoreVector
Base10.0AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal7.3E:U/RL:W/RC:UC
Environmental1.8CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

  • http://www.dahuasecurity.com/

Credit

Thanks to Andrey Bezborodov, Kirill Ermakov, Alexander Raspopov, and Dmitry Sklyarov of Positive Technologies for reporting these vulnerabilities.

This document was written by Todd Lewellen.

Other Information

  • CVE IDs:CVE-2013-3612CVE-2013-3613CVE-2013-3614CVE-2013-3615
  • Date Public:13 Aug 2013
  • Date First Published:13 Sep 2013
  • Date Last Updated:13 Sep 2013
  • Document Revision:33

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/800094

CWE : Common Weakness Enumeration

% Id Name
40 % CWE-264 Permissions, Privileges, and Access Controls
40 % CWE-255 Credentials Management
20 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1

ExploitDB Exploits

id Description
2013-11-18 Dahua DVR 2.608.0000.0 and 2.608.GV00.0 - Authentication Bypass

Snort® IPS/IDS

Date Description
2018-02-03 Dahua DVR clear logs request attempt
RuleID : 45329 - Revision : 4 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR admin password reset attempt
RuleID : 45328 - Revision : 3 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR NAS configuration download attempt
RuleID : 45327 - Revision : 3 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR user group information query attempt
RuleID : 45326 - Revision : 4 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR DDNS configuration download attempt
RuleID : 45325 - Revision : 3 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR user password hash query attempt
RuleID : 45324 - Revision : 4 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR email configuration download attempt
RuleID : 45323 - Revision : 3 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR channel information query attempt
RuleID : 45322 - Revision : 4 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR firmware version query attempt
RuleID : 45321 - Revision : 4 - Type : SERVER-WEBAPP
2018-02-03 Dahua DVR serial number query attempt
RuleID : 45320 - Revision : 5 - Type : SERVER-WEBAPP
2018-01-23 Dahua DVR hard-coded root login attempt
RuleID : 45253 - Revision : 2 - Type : SERVER-OTHER

Alert History

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Date Informations
2013-11-24 21:19:41
  • Multiple Updates
2013-09-17 21:24:14
  • Multiple Updates
2013-09-17 17:23:07
  • Multiple Updates
2013-09-13 21:19:10
  • First insertion