CVE-2020-5402 : Vulnerability Insights and Analysis

In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.

Understanding CVE-2020-5402

Cloud Foundry UAA is affected by a CSRF vulnerability in versions before 74.14.0, impacting the security of authentication with external identity providers.

What is CVE-2020-5402?

This CVE refers to a Cross-Site Request Forgery (CSRF) vulnerability in Cloud Foundry UAA, where the state parameter is not properly validated during authentication with external IDPs.

The Impact of CVE-2020-5402

The vulnerability has a CVSS base score of 8.8 (High severity) with significant impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2020-5402

Cloud Foundry UAA's CSRF vulnerability and its implications.

Vulnerability Description

CSRF vulnerability in Cloud Foundry UAA prior to version 74.14.0
Lack of validation for the OAuth2 state parameter during authentication

Affected Systems and Versions

Product: UAA
Vendor: Cloud Foundry
Versions Affected: < v74.14.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: Required

Mitigation and Prevention

Protecting systems from the CVE-2020-5402 vulnerability.

Immediate Steps to Take

Update Cloud Foundry UAA to version 74.14.0 or higher
Implement additional CSRF protection mechanisms

Long-Term Security Practices

Regular security assessments and audits
Educate users on safe authentication practices

Patching and Updates

Apply security patches promptly
Monitor vendor communications for security advisories