CVE-2020-13859 : Exploit Details and Defense Strategies
Discover the security vulnerability in Mofi Network MOFI4500-4GXeLTE 4.0.8-std devices allowing unauthorized access to the management interface. Learn about the impact, affected systems, exploitation, and mitigation steps.
An issue was discovered on Mofi Network MOFI4500-4GXeLTE 4.0.8-std devices, allowing unauthorized access to the management interface.
Understanding CVE-2020-13859
This CVE identifies a security vulnerability in Mofi Network MOFI4500-4GXeLTE 4.0.8-std devices that enables unauthorized access to the management interface.
What is CVE-2020-13859?
The vulnerability arises from a format error in /etc/shadow and a logic bug in the LuCI - OpenWrt Configuration Interface framework. It permits the undocumented system account 'mofidev' to log in to the management interface without a password by exploiting a forgotten-password feature.
The Impact of CVE-2020-13859
The vulnerability allows unauthorized users to access the management interface, potentially leading to unauthorized configuration changes, data theft, or further exploitation of the affected devices.
Technical Details of CVE-2020-13859
This section provides technical details about the vulnerability.
Vulnerability Description
The issue allows the 'mofidev' account to bypass authentication and gain access to the management interface without a password.
Affected Systems and Versions
- Mofi Network MOFI4500-4GXeLTE 4.0.8-std devices are affected by this vulnerability.
Exploitation Mechanism
- The vulnerability is exploited by abusing a forgotten-password feature, combined with a format error in /etc/shadow and a logic bug in the LuCI framework.
Mitigation and Prevention
Protect your systems from CVE-2020-13859 with the following steps:
Immediate Steps to Take
- Disable remote access to the management interface if not required.
- Change default passwords and ensure strong, unique passwords are set.
- Regularly monitor and review system logs for any unauthorized access attempts.
Long-Term Security Practices
- Implement network segmentation to restrict access to critical devices.
- Keep systems up to date with the latest security patches and firmware updates.
Patching and Updates
- Apply patches and updates provided by Mofi Network to address this vulnerability.