CVE-2022-39366 Explained : Impact and Mitigation

DataHub missing JWT signature check vulnerability in DataHub metadata service.

Understanding CVE-2022-39366

This CVE affects DataHub, an open-source metadata platform, allowing an attacker to impersonate any user if Metadata Service authentication is enabled.

What is CVE-2022-39366?

Prior to version 0.8.45, the

StatelessTokenService

of DataHub's Metadata service does not verify the signature of JWT tokens. This oversight enables unauthorized access to DataHub instances.

The Impact of CVE-2022-39366

The vulnerability allows attackers to connect to DataHub as any user, potentially leading to an authentication bypass. Version 0.8.45 contains a patch to address this issue with no known workarounds.

Technical Details of CVE-2022-39366

Vulnerability Description

The vulnerability arises due to the

StatelessTokenService

utilizing the

parse

method of

io.jsonwebtoken.JwtParser

, which omits cryptographic token signature verification.

Affected Systems and Versions

DataHub versions prior to 0.8.45 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit the lack of JWT signature verification to gain unauthorized access to DataHub instances.

Mitigation and Prevention

Immediate Steps to Take

Users are advised to update to version 0.8.45 or later to mitigate the vulnerability.

Long-Term Security Practices

Implement strict access controls and regularly update DataHub to prevent security breaches.

Patching and Updates

Refer to the official DataHub release (v0.8.45) for the patched version addressing this vulnerability.