CVE-2020-29583 : Security Advisory and Response
Discover the security risk in Zyxel USG devices' firmware version 4.60 with an undocumented account 'zyfwp' and learn how to mitigate CVE-2020-29583 to prevent unauthorized access.
This CVE record pertains to a security issue in Zyxel USG devices' firmware version 4.60, involving an undocumented account with a hardcoded password.
Understanding CVE-2020-29583
This CVE identifies a critical vulnerability in Zyxel USG devices that could allow unauthorized access to the system.
What is CVE-2020-29583?
The firmware version 4.60 of Zyxel USG devices contains an undocumented account named 'zyfwp' with a password that cannot be changed. The password for this account is stored in clear text within the firmware, enabling unauthorized individuals to gain admin privileges through SSH or the web interface.
The Impact of CVE-2020-29583
The presence of this undocumented account with a static password poses a severe security risk, potentially leading to unauthorized access and control of affected Zyxel USG devices.
Technical Details of CVE-2020-29583
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability involves an undocumented account 'zyfwp' with an unchangeable password stored in clear text within the firmware of Zyxel USG devices.
Affected Systems and Versions
- Vendor: Zyxel
- Product: USG devices
- Affected Version: 4.60
Exploitation Mechanism
Unauthorized users can exploit this vulnerability by leveraging the hardcoded password of the 'zyfwp' account to gain unauthorized access to the Zyxel USG device.
Mitigation and Prevention
Protecting systems from CVE-2020-29583 requires immediate action and long-term security measures.
Immediate Steps to Take
- Disable the undocumented 'zyfwp' account if possible.
- Monitor network traffic for any unauthorized access attempts.
- Implement firewall rules to restrict access to vulnerable devices.
Long-Term Security Practices
- Regularly update firmware to patch known vulnerabilities.
- Conduct security audits to identify and address potential weaknesses in the network infrastructure.
Patching and Updates
- Apply patches provided by Zyxel to address the CVE-2020-29583 vulnerability.