CVE-2020-10185 : What You Need to Know

YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP, potentially affecting self-hosted OTP validation services.

Understanding CVE-2020-10185

The sync endpoint vulnerability in YubiKey Validation Server poses a security risk for certain configurations.

What is CVE-2020-10185?

The issue allows attackers to replay an OTP, impacting users of self-hosted OTP validation services with specific configurations.

The Impact of CVE-2020-10185

Remote attackers can exploit the vulnerability to replay an OTP, potentially compromising security.
Users of self-hosted OTP validation services with non-default configurations are at risk.

Technical Details of CVE-2020-10185

YubiKey Validation Server vulnerability specifics.

Vulnerability Description

The sync endpoint in YubiKey Validation Server before 2.40 is susceptible to OTP replay attacks.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: N/A

Exploitation Mechanism

Remote attackers can exploit the sync endpoint to replay an OTP, posing a security threat.

Mitigation and Prevention

Protecting systems from CVE-2020-10185.

Immediate Steps to Take

Update YubiKey Validation Server to version 2.40 or newer to mitigate the vulnerability.
Review and adjust OTP validation service configurations to enhance security.

Long-Term Security Practices

Regularly monitor and update security configurations to prevent similar vulnerabilities.
Implement multi-factor authentication and strong access controls to enhance security.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to secure systems.