National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20219 Detail

Current Description

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. After successful authentication, the device sends an authentication cookie to the end user such that they can access the devices web administration panel. This token is hard-coded to a string in the source code (/usr/share/www/check.lp file). By setting this cookie in a browser, an attacker is able to maintain access to every ENC-400 device without knowing the password, which results in authentication bypass. Even if a user changes the password on the device, this token is static and unchanged.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.1 HIGH
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 9.3 HIGH
Vector: (AV:N/AC:M/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/151802/Teracue-ENC-400-Command-Injection-Missing-Authentication.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2019/Feb/48 Mailing List Third Party Advisory
https://zxsecurity.co.nz/research.html Not Applicable

Technical Details

Vulnerability Type (View All)

  • Use of Hard-coded Credentials (CWE-798)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:teracue:enc-400_hdmi_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.56
Running on/with
 cpe:2.3:h:teracue:enc-400_hdmi:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:teracue:enc-400_hdmi2_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.56
Running on/with
 cpe:2.3:h:teracue:enc-400_hdmi2:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:teracue:enc-400_hdsdi_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.56
Running on/with
 cpe:2.3:h:teracue:enc-400_hdsdi:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20219
NVD Published Date:
03/21/2019
NVD Last Modified:
03/25/2019