Headline
CVE-2023-33237: TN-5900 and TN-4900 Series Web Server Multiple Vulnerabilities
TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.
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SUMMARY
AFFECTED PRODUCTS AND SOLUTIONS
Affected Products:
The affected products and firmware versions are shown below.
Product Series
Affected Versions
TN-5900 Series
Firmware version v3.3 and prior versions
CVE-2023-33237, CVE-2023-33238, CVE-2023-33239, CVE-2023-34213, CVE-2023-34214, CVE-2023-34215, CVE-2023-34216, CVE-2023-34217
TN-4900 Series
Firmware version v1.2.4 and prior versions
CVE-2023-33238, CVE-2023-33239, CVE-2023-34214, CVE-2023-34216, CVE-2023-34217
Solutions:
Moxa has developed appropriate solutions to address the vulnerabilities. The solutions for the affected products are shown below.
Mitigation:
Minimize network exposure to ensure the device is not accessible from the Internet.
When remote access is required, use secure methods, such as Virtual Private Networks (VPNs).
- The starting point of all the above vulnerabilities is from the web service, so it is suggested to disable the web service temporarily if you completed configuration to prevent further damages from these vulnerabilities until you have installed the patch or updated the firmware.
Products Confirmed Not Vulnerable:
Only products listed in the Affected Products section of this advisory are known to be affected by this vulnerability.
Acknowledgment:
We would like to express our appreciation to Simon Janz of CODE WHITE GmbH for reporting the vulnerability, working with us to help enhance the security of our products, and helping us provide a better service to our customers.
Revision History:
VERSION
DESCRIPTION
RELEASE DATE
1.0
First Release
Aug. 16, 2022
Relevant Products
TN-4900 Series · TN-5900 Series ·
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Related Advisories
- Multiple Routers Improper Input Validation Vulnerabilities
- TN-5900 Series User Enumeration Vulnerability
- TN-5916 Series Privilege Escalation Vulnerability
- Secure Router EDR and TN Series Improper Input Validation Vulnerabilities
- Secure Router EDR and TN Series Improper Input Validation Vulnerabilities
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