CVE-2020-27657 : Vulnerability Insights and Analysis
Learn about CVE-2020-27657, a vulnerability in Synology Router Manager (SRM) allowing interception of sensitive data. Find mitigation steps and long-term security practices here.
A vulnerability in Synology Router Manager (SRM) before version 1.2.4-8081 could allow attackers to intercept sensitive information during DDNS communication.
Understanding CVE-2020-27657
This CVE involves a cleartext transmission vulnerability in DDNS within Synology Router Manager (SRM), potentially enabling man-in-the-middle attacks.
What is CVE-2020-27657?
The vulnerability in Synology Router Manager (SRM) allows attackers to eavesdrop on authentication data of DNSExit due to cleartext transmission of sensitive information.
The Impact of CVE-2020-27657
The vulnerability has a CVSS base score of 6.5 (Medium severity) and affects confidentiality, integrity, and availability of the system. Attackers can exploit this flaw to intercept sensitive data.
Technical Details of CVE-2020-27657
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability in Synology Router Manager (SRM) allows man-in-the-middle attackers to intercept authentication information of DNSExit due to cleartext transmission of sensitive data during DDNS communication.
Affected Systems and Versions
- Product: Synology Router Manager (SRM)
- Vendor: Synology
- Versions Affected: < 1.2.4-8081 (unspecified custom version)
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: None
- Scope: Changed
- User Interaction: None
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
Mitigation and Prevention
Protecting systems from CVE-2020-27657 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Synology Router Manager (SRM) to version 1.2.4-8081 or higher to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Implement encryption mechanisms for sensitive data transmission.
- Regularly review and update security configurations to prevent similar vulnerabilities.
Patching and Updates
- Apply security patches provided by Synology promptly to address the vulnerability and enhance system security.