CVE-2020-5686 Explained : Impact and Mitigation
Learn about CVE-2020-5686 affecting UNIVERGE SV9500/SV8500 series by NEC Corporation. Find out how an attacker can exploit an authentication algorithm issue to access remote system maintenance.
UNIVERGE SV9500/SV8500 series by NEC Corporation is affected by an authentication algorithm issue, potentially allowing unauthorized access to the remote system maintenance feature.
Understanding CVE-2020-5686
This CVE involves an incorrect implementation of the authentication algorithm in specific versions of the UNIVERGE SV9500 and SV8500 series.
What is CVE-2020-5686?
The vulnerability in UNIVERGE SV9500 series from V1 to V7 and SV8500 series from S6 to S8 enables attackers to exploit the remote system maintenance feature through specially crafted requests.
The Impact of CVE-2020-5686
The vulnerability could lead to unauthorized access to sensitive information on the affected systems, posing a risk to confidentiality and system integrity.
Technical Details of CVE-2020-5686
This section provides detailed technical information about the CVE.
Vulnerability Description
The issue arises from the incorrect implementation of the authentication algorithm in the specified versions of the UNIVERGE SV9500 and SV8500 series.
Affected Systems and Versions
- Product: UNIVERGE SV9500/SV8500 series
- Vendor: NEC Corporation
- Versions: SV9500 series from V1 to V7 and SV8500 series from S6 to S8
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a specially crafted request to a specific URL, gaining unauthorized access to the remote system maintenance feature.
Mitigation and Prevention
Protecting systems from CVE-2020-5686 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by NEC Corporation promptly.
- Monitor network traffic for any suspicious activity.
- Restrict access to the affected systems.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and audits periodically.
- Educate users and administrators on secure practices.
Patching and Updates
Ensure that all affected systems are updated with the latest patches and security fixes to mitigate the vulnerability.