A vulnerability was detected in TRENDnet TEW-821DAP up to 1.12B01. The affected element is the function tools_diagnostic, which allows for OS command injection. The exploit is now public and may be used. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling." This vulnerability only affects products that are no longer supported by the maintainer.
The severity level of this vulnerability is classified as low, with a CVSS score of 2. This means the risk to organizations is relatively low, but given the nature of the vulnerability, it remains important to understand the potential implications.
Risk to organizations includes the ability for attackers to manipulate the affected functionality, potentially leading to unauthorized command execution. Although the vulnerability is not actively exploited, the availability of a public exploit raises concerns for environments still using this product.
Organizations should prioritize patching immediately for any systems still running the affected firmware version or consider upgrading to supported alternatives if applicable.
Vulnerability Details
The official description states that this vulnerability allows for OS command injection due to flaws in the tools_diagnostic function. The CVSS score of 2 indicates a low severity level, which suggests that while the vulnerability poses some risk, the overall impact may be limited depending on the environment.
The affected product is the TRENDnet TEW-821DAP, specifically firmware versions up to 1.12B01. This product is no longer supported as it has reached its end-of-life, making it crucial for organizations to transition to supported alternatives.
The vulnerability is classified under CWE-77 (Command Injection) and CWE-78 (OS Command Injection), highlighting the potential for serious exploitation if the system is still in use.
Technical Analysis
The root cause of this vulnerability appears to be a failure in input validation within the tools_diagnostic function, allowing attackers to inject arbitrary commands. The attack vector is classified as adjacent, meaning that the attacker needs to be on the same local network.
The attack complexity is low, as it requires minimal effort to exploit this vulnerability, given that only low privileges are needed to initiate the attack. Importantly, no user interaction is required to exploit this vulnerability.
The impacts on confidentiality, integrity, and availability are all rated as low. While the exploitation of this vulnerability may allow for command execution, the potential damage is limited due to the product's end-of-life status and the lack of ongoing support.
Risk & Impact Analysis
Organizations still utilizing the TRENDnet TEW-821DAP device face a deployment risk that could lead to unauthorized command execution. The overall impact on the organization depends on the criticality of the functions that the affected device performs.
Given the low CVSS score, the urgency for remediation is moderate. Organizations should schedule remediation of this vulnerability during their patch cycle, especially if the affected firmware is still in use.
The potential blast radius is limited, but organizations must be aware of the risks associated with using unsupported devices within their environments, as they may serve as entry points for attackers.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected. The specific version that introduces the vulnerability is TRENDnet TEW-821DAP firmware version 1.12B01.
Mitigation & Remediation
Organizations should upgrade to a supported version of the firmware or replace the device entirely, as it is no longer maintained. If patching is not possible, consider implementing network controls to restrict access to the device.
For further security measures, organizations may benefit from engaging in penetration testing to identify similar vulnerabilities in other network devices.
Detection Guidance
Organizations should monitor for any unusual behavior on devices still running vulnerable firmware. Log indicators of command execution and watch for any unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in the trend of using unsupported devices within networks. Security teams must be aware of the risks that come with such devices to prevent exploitation.
This situation illustrates the importance of maintaining updated inventory and lifecycle management of network devices. Regular reviews can help identify unsupported devices before they become a liability.
For more information on managing vulnerabilities, consider exploring vulnerability management program design strategies.
Additionally, organizations can benefit from reviewing best practices in penetration testing methodology to ensure a robust security posture.
Finally, organizations should consider engaging in a regular review of their continuous penetration testing program to proactively identify and remediate vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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