Improper Certificate Validation in Synology Router Manager Affects OpenVPN Client
CVE-2020-27649

8.3HIGH

Key Information:

Vendor

Synology
Status
Synology Router Manager (srm)
Vendor
CVE Published:
29 October 2020

What is CVE-2020-27649?

The OpenVPN client in Synology Router Manager is susceptible to an improper certificate validation vulnerability. This flaw allows man-in-the-middle attackers to exploit the improper verification process, enabling them to spoof legitimate servers. By presenting a specially crafted certificate, attackers can intercept and gain access to sensitive information transmitted between clients and the server, potentially leading to data leaks and compromised security protocols.

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Affected Version(s)

Synology Router Manager (SRM) < 1.2.4-8081

References

https://www.synology.com/security/advisory/Synology_SA_20_14
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https://www.talosintelligence.com/vulnerability_reports/T...
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CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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