A vulnerability has been found in Tenda F453 up to 1.0.0.3. Impacted is the function TendaTelnet of the file /goform/telnet of the component Telnet Service. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
The vulnerability has a CVSS score of 5.3, indicating a medium severity. This level of risk necessitates that organizations prioritize patching in their immediate operational security processes. The attack vector is network-based, and the attack complexity is low, which means that the likelihood of exploitation is significant.
Risk to organizations includes unauthorized command execution that can lead to further exploitation of the device. Attackers may leverage this vulnerability to execute arbitrary commands on the affected Tenda devices, which could result in unauthorized access to sensitive information or disruption of services.
Organizations should address this vulnerability in their patch cycles. The public disclosure of the exploit means that remediation should be prioritized to mitigate any potential risks of compromise.
Vulnerability Details
A vulnerability has been found in Tenda F453 up to 1.0.0.3. Impacted is the function TendaTelnet of the file /goform/telnet of the component Telnet Service. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) and CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection')).
The CVSS score is 5.3, which reflects a medium severity according to version 4.0. This score indicates a network attack vector with low complexity and requires low privileges. The impact on confidentiality, integrity, and availability is rated as low.
Technical Analysis
The root cause of this vulnerability arises from inadequate input validation within the Telnet Service, allowing command injection through the TendaTelnet function. The attack vector is network-based, which means that an attacker does not need physical access to the device to exploit this weakness.
The attack complexity is low, and the privileges required to exploit this vulnerability are also low. No user interaction is required, making it easier for attackers to target vulnerable devices. The impacts on confidentiality, integrity, and availability have been assessed as low, indicating limited repercussions on the overall security of the affected systems.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is significant due to its remote exploitability and low complexity. Organizations utilizing the Tenda F453 model face a heightened risk of unauthorized command execution, which could lead to further breaches or data loss.
The blast radius potential is considerable; if exploited, attackers could gain control over the device, leading to possible lateral movement within the network. Organizations should assess their exposure and prioritize remediation efforts based on the CVSS score and the public availability of exploit details.
According to the EPSS score of 0.00667, the risk percentile places this vulnerability within the lower range, but the public disclosure of an exploit necessitates immediate attention.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is Tenda F453 up to 1.0.0.3. Organizations should ensure that they upgrade to a patched version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately to fix this vulnerability. It is essential to apply the latest firmware updates provided by Tenda. In cases where immediate patching is not possible, consider disabling the Telnet service and implementing network segmentation to mitigate potential exposure.
Continuous monitoring of network traffic for unusual patterns can also help identify attempts to exploit this vulnerability.
For more information on penetration testing services, organizations can refer to AppSecure's offerings such as penetration testing to assess their security posture.
Detection Guidance
Organizations should log access attempts to the Telnet service and monitor for any unusual activity. Behavioral anomalies such as unexpected command execution or communication with unauthorized external systems should be flagged for further investigation.
Network signatures may include specific patterns of traffic originating from the affected devices that do not conform to normal operational profiles.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in the potential for attackers to leverage command injection flaws to gain control over various networked devices. As the attack vector is network-based, this trend highlights the importance of securing remote access services and the need for rigorous input validation.
Security teams should take lessons from this vulnerability to strengthen their defenses against similar command injection risks in their own systems.
For further reading on securing networked devices, organizations can explore guides on network security architecture and secure configuration management best practices.
Organizations should also consider engaging in penetration testing to identify other potential weaknesses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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