Description
A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function formSafeEmailFilter of the file /goform/SafeEmailFilter. Performing manipulation of the argument page results in memory corruption. The attack is possible to be carried out remotely. The exploit has been made public and could be used.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-31854
1. Vulnerability Assessment and Severity Evaluation
The vulnerability identified in Tenda CH22 1.0.0.1, specifically within the formSafeEmailFilter function of the file /goform/SafeEmailFilter, is classified as a memory corruption issue. This vulnerability allows for remote exploitation by manipulating the page argument, leading to potential memory corruption. The CVSS (Common Vulnerability Scoring System) base score of 9.3 indicates a critical severity level. The scoring vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P highlights the following:
- Attack Vector (AV:N): Network, meaning the vulnerability can be exploited remotely.
- Attack Complexity (AC:L): Low, indicating that the attack is relatively straightforward to execute.
- Privileges Required (PR:N): None, meaning no special privileges are needed to exploit the vulnerability.
- User Interaction (UI:N): None, indicating that no user interaction is required for the attack to succeed.
- Confidentiality (VC:H): High impact on confidentiality.
- Integrity (VI:H): High impact on integrity.
- Availability (VA:H): High impact on availability.
- Exploit Code Maturity (E:P): Proof-of-concept code is available.
2. Potential Attack Vectors and Exploitation Methods
Given the nature of the vulnerability, potential attack vectors include:
- Remote Code Execution (RCE): An attacker could exploit the memory corruption to execute arbitrary code on the affected device.
- Denial of Service (DoS): The memory corruption could lead to a crash or unresponsive state, effectively causing a denial of service.
- Data Exfiltration: The attacker could potentially exfiltrate sensitive information stored on the device.
Exploitation methods may involve crafting a malicious HTTP request targeting the formSafeEmailFilter function with a manipulated page argument. This could be achieved using tools like curl, Burp Suite, or custom scripts.
3. Affected Systems and Software Versions
The vulnerability specifically affects:
- Product: Tenda CH22
- Version: 1.0.0.1
It is crucial to verify if other versions of the Tenda CH22 or related products are also affected.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, the following strategies are recommended:
- Patch Management: Immediately apply any available patches or updates provided by Tenda.
- Network Segmentation: Isolate affected devices from critical networks to limit potential damage.
- Access Control: Implement strict access controls to restrict unauthorized access to the device.
- Monitoring and Logging: Enhance monitoring and logging to detect any suspicious activities targeting the vulnerable function.
- Firewall Rules: Implement firewall rules to block unauthorized access to the
/goform/SafeEmailFilterendpoint.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to European organizations and individuals using the Tenda CH22 device. Given the critical nature of the vulnerability and its potential for remote exploitation, it could be leveraged in large-scale attacks targeting European infrastructure. The availability of a public exploit further exacerbates the risk, making it imperative for organizations to take immediate mitigation actions.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Vulnerable Function:
formSafeEmailFilter - Affected File:
/goform/SafeEmailFilter - Exploit Method: Manipulation of the
pageargument leading to memory corruption. - Detection: Monitor for unusual traffic patterns targeting the
/goform/SafeEmailFilterendpoint. Use Intrusion Detection Systems (IDS) to detect and alert on suspicious activities. - Response: In case of an attack, isolate the affected device, perform a forensic analysis to understand the extent of the compromise, and apply necessary patches and updates.
References
Conclusion
The vulnerability in Tenda CH22 1.0.0.1 is critical and requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk. Continuous monitoring and vigilance are essential to protect against potential exploitation attempts.