CVE-2020-22079 : Exploit Details and Defense Strategies
Learn about CVE-2020-22079, a critical stack-based buffer overflow vulnerability in Tenda AC-10U AC1200 Router allowing remote code execution. Find mitigation steps and prevention measures.
A stack-based buffer overflow vulnerability in Tenda AC-10U AC1200 Router US_AC10UV1.0RTL_V15.03.06.48_multi_TDE01 allows remote attackers to execute arbitrary code via the timeZone parameter to goform/SetSysTimeCfg.
Understanding CVE-2020-22079
This CVE involves a critical vulnerability in the Tenda AC-10U AC1200 Router that can be exploited by attackers to run malicious code remotely.
What is CVE-2020-22079?
The vulnerability in Tenda AC-10U AC1200 Router allows attackers to trigger a stack-based buffer overflow by manipulating the timeZone parameter in the goform/SetSysTimeCfg function.
The Impact of CVE-2020-22079
Exploiting this vulnerability can lead to remote code execution, enabling attackers to take control of the affected router and potentially compromise the entire network.
Technical Details of CVE-2020-22079
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability arises due to improper input validation in the timeZone parameter of the goform/SetSysTimeCfg function, leading to a stack-based buffer overflow.
Affected Systems and Versions
- Product: Tenda AC-10U AC1200 Router
- Vendor: Tenda
- Version: US_AC10UV1.0RTL_V15.03.06.48_multi_TDE01
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted requests containing a manipulated timeZone parameter, triggering the buffer overflow and executing arbitrary code.
Mitigation and Prevention
To address CVE-2020-22079, users and administrators should take immediate and long-term security measures.
Immediate Steps to Take
- Disable remote access to the router if not required
- Implement strong firewall rules to restrict unauthorized access
- Monitor network traffic for any suspicious activities
Long-Term Security Practices
- Regularly update router firmware to patch known vulnerabilities
- Conduct security assessments and penetration testing on network devices
Patching and Updates
- Check for firmware updates from Tenda and apply patches promptly to mitigate the vulnerability