CVE-2025-1814

Remediation/Mitigation Strategy for CVE-2025-1814 - Tenda AC6 Stack-Based Buffer Overflow

This document outlines the remediation and mitigation strategies for CVE-2025-1814, a critical vulnerability affecting Tenda AC6 routers.

1. Vulnerability Description:

  • Vulnerability Name: Stack-Based Buffer Overflow
  • Affected Product: Tenda AC6
  • Affected Firmware Version: 15.03.05.16
  • Affected Component: /goform/WifiExtraSet
  • Affected Parameter: wpapsk_crypto
  • Vulnerability Type: Stack-Based Buffer Overflow
  • Description: A critical vulnerability exists in Tenda AC6 firmware version 15.03.05.16. An attacker can exploit a stack-based buffer overflow in the /goform/WifiExtraSet component by manipulating the wpapsk_crypto argument. This allows remote attackers to potentially execute arbitrary code on the device, leading to complete system compromise.

2. Severity:

  • CVSS Score: 9.0 (Critical)
  • Impact: Remote Code Execution (RCE), Full System Compromise, Data Confidentiality Breach, Data Integrity Breach, Denial of Service (DoS)

3. Exploit Information:

  • Exploit Status: Publicly Available. This means exploit code is readily accessible, making attacks highly likely.
  • Attack Vector: Remote. The vulnerability can be exploited over the network, requiring no physical access to the device.
  • Attack Complexity: Currently Unknown. The provided data does not give an assessment of attack complexity.

4. Remediation Strategy:

  • Primary Solution: Firmware Update (Recommended)

    • Vendor Patch: The most effective solution is to immediately update the Tenda AC6 firmware to a version that addresses this vulnerability. Check the Tenda website (www.tenda.com.cn) for available firmware updates or contact Tenda support.
    • Firmware Update Procedure: Follow the instructions provided by Tenda for updating the firmware. Ensure the downloaded firmware is legitimate and comes directly from the Tenda website or an official source.
    • Verification: After the firmware update, verify the device is running the patched version.

  • Secondary Solution: Mitigation (If Firmware Update Not Immediately Available)

    • Disable Remote Management: If possible, disable remote management access to the router. This will prevent attackers from exploiting the vulnerability from outside the local network. Access should only be allowed from within your local network.
    • Strong Password: Ensure that the router is configured with a strong, unique password. Weak passwords make it easier for attackers to gain access to the router’s configuration interface. Change the default password immediately.
    • Network Segmentation: If possible, segment your network to limit the impact of a successful attack. This involves isolating the router and any critical devices on a separate network segment.
    • Monitor Network Traffic: Monitor your network traffic for suspicious activity, such as unusual requests to the router or large amounts of data being transmitted.
    • Firewall Rules: Configure your router’s firewall to block any unauthorized access to the management interface.
    • Enable Intrusion Detection/Prevention Systems (IDS/IPS): If your router or network includes IDS/IPS capabilities, enable them and ensure they are up-to-date with the latest vulnerability signatures.

5. Mitigation Steps:

  • Step 1: Identify Affected Devices: Immediately identify all Tenda AC6 routers running firmware version 15.03.05.16 on your network.
  • Step 2: Prioritize Patching/Mitigation: Prioritize patching or mitigating the vulnerability on devices that are directly exposed to the internet.
  • Step 3: Update Firmware (Recommended): Update the firmware on all affected devices as soon as a patched version is available.
  • Step 4: Implement Mitigation Controls (If Patching is Delayed): Implement the secondary mitigation strategies described above if a firmware update is not immediately available.
  • Step 5: Monitoring and Validation: Continuously monitor your network for suspicious activity and validate that the implemented remediation and mitigation strategies are effective.
  • Step 6: User Awareness: Inform users on the network to not change any critical settings on the router without consulting the appropriate IT personnel.

6. Long-Term Recommendations:

  • Vendor Communication: Contact Tenda to inquire about the vulnerability and request a timeline for the release of a patched firmware version.
  • Firmware Update Schedule: Establish a regular schedule for checking and applying firmware updates to all network devices.
  • Vulnerability Scanning: Implement regular vulnerability scanning to identify and address security weaknesses on your network.
  • Security Awareness Training: Provide security awareness training to users to educate them about potential threats and best practices for protecting their devices.

7. Disclaimer:

This remediation strategy is based on the information available at the time of writing. The effectiveness of these measures may vary depending on the specific environment and attack vector. It is recommended to consult with a security expert to develop a comprehensive security plan that addresses your specific needs.

Assigner

Date

  • Published Date: 2025-03-02 11:15:10
  • Updated Date: 2025-03-02 11:15:10

More Details

CVE-2025-1814