CVE-2019-8950 : What You Need to Know
Learn about CVE-2019-8950, a backdoor account vulnerability on DASAN H665 devices allowing unauthorized access to the admin account via TELNET. Find mitigation steps and preventive measures.
A backdoor account on DASAN H665 devices allows unauthorized access to the admin account via TELNET.
Understanding CVE-2019-8950
What is CVE-2019-8950?
The CVE-2019-8950 vulnerability involves the exploitation of a backdoor account named dnsekakf2$$ in the /bin/login directory on DASAN H665 devices running firmware version 1.46p1-0028 through TELNET.
The Impact of CVE-2019-8950
This vulnerability enables attackers to gain access to the admin account on affected devices, potentially leading to unauthorized control and manipulation of the system.
Technical Details of CVE-2019-8950
Vulnerability Description
An attacker can exploit the backdoor account to log in as an admin through TELNET on DASAN H665 devices.
Affected Systems and Versions
- Device: DASAN H665
- Firmware Version: 1.46p1-0028
Exploitation Mechanism
The vulnerability allows attackers to bypass normal authentication mechanisms and directly access the admin account using the backdoor account.
Mitigation and Prevention
Immediate Steps to Take
- Disable TELNET services on affected devices.
- Change default passwords and implement strong, unique credentials.
- Monitor network traffic for any unauthorized access attempts.
Long-Term Security Practices
- Regularly update firmware and security patches.
- Conduct security audits and penetration testing to identify and address vulnerabilities.
Patching and Updates
Apply patches and updates provided by the vendor to address the backdoor account issue on DASAN H665 devices.