[Japanese]

JVNDB-2022-002346

Multiple vulnerabilities in Contec FLEXLAN FX3000 and FX2000 series

Overview

FLEXLAN FX3000 and FX2000 series provided by Contec Co., Ltd. contain multiple vulnerabilities listed below.
* Hidden Functionality (CWE-912) - CVE-2022-36158
* Use of Hard-coded Credentials (CWE-798) - CVE-2022-36159

Thomas J. Knudsen and Samy Younsi of Necrum Security Labs reported these vulnerabilities to JPCERT/CC.
JPCERT/CC coordinated with the developer.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 8.0 (High) [Other]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
The above CVSS base scores have been assigned for CVE-2022-36158

CVSS V3 Severity:
Base Metrics:8.8 (High) [Other]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
The above CVSS base scores have been assigned for CVE-2022-36159
Affected Products


Contec
  • FLEXLAN FX2000 firmware prior to ver.1.39.00
  • FLEXLAN FX3000 firmware prior to ver.1.16.00

Impact

An attacker may execute an arbitrary OS command with an administrative privilege of the product - CVE-2022-36158
An attacker may access the product with an administrative privilege - CVE-2022-36159
Solution

[Update the firmware]
Update the firmware to the latest version according to the information provided by the developer.
The developer has released the following versions that contain fixes for these vulnerabilities.

* FLEXLAN FX3000 series
* Firmware version ver.1.16.00
* FLEXLAN FX2000 series
* Firmware version ver.1.39.00
Vendor Information

Contec
CWE (What is CWE?)

  1. Use of Hard-coded Credentials(CWE-798) [Other]
  2. Hidden Functionality(CWE-912) [Other]
CVE (What is CVE?)

  1. CVE-2022-36158
  2. CVE-2022-36159
References

  1. JVN : JVNVU#98305100
  2. National Vulnerability Database (NVD) : CVE-2022-36158
  3. National Vulnerability Database (NVD) : CVE-2022-36159
Revision History

  • [2022/09/02]
      Web page was published

Date Public2022/09/01
Date First Published2022/09/02
Date Last Updated2022/09/02