CVE-2022-31091 Explained : Impact and Mitigation

Guzzle, an extensible PHP HTTP client, is affected by a vulnerability where a change in port should be considered a change in origin. Attackers can expose sensitive information by manipulating

Authorization

and

Cookie

headers on requests. Users are advised to upgrade affected versions to mitigate the risk.

Understanding CVE-2022-31091

This vulnerability impacts Guzzle, affecting the handling of requests that receive redirects to URIs with different ports. Failure to address this issue can lead to the exposure of sensitive headers and information, posing a risk to user security.

What is CVE-2022-31091?

CVE-2022-31091 highlights the importance of treating a change in port as a change in origin in Guzzle to prevent the leakage of sensitive header information. It emphasizes the need for users to upgrade to secure versions promptly.

The Impact of CVE-2022-31091

The vulnerability allows threat actors to access sensitive information by manipulating headers in requests. This could result in unauthorized exposure of data and potential security breaches if not addressed promptly.

Technical Details of CVE-2022-31091

Users of affected versions of Guzzle should take immediate action to secure their systems and prevent potential exploitation.

Vulnerability Description

The issue arises when requests respond with redirects to URIs on different ports, leading to the unintentional exposure of

Authorization

and

Cookie

headers. Upgrading to secure versions is essential to mitigate this risk.

Affected Systems and Versions

Guzzle versions prior to 6.5.8 and versions between 7.0.0 and 7.4.5 are susceptible to this vulnerability. Users should upgrade to Guzzle 7.4.5 or Guzzle 6.5.8 to address the issue.

Exploitation Mechanism

By triggering redirects to URIs with different ports, threat actors can exploit the vulnerability to access and potentially misuse sensitive header information, compromising user security.

Mitigation and Prevention

To safeguard systems against CVE-2022-31091, users must take immediate steps to enhance security measures and protect sensitive information from unauthorized access.

Immediate Steps to Take

Upgrade to Guzzle 7.4.5 for users of affected Guzzle 7 versions and Guzzle 6.5.8 for users of earlier series to prevent further exposure of sensitive headers.

Long-Term Security Practices

Implement a redirect middleware to handle redirects securely, or disable redirects entirely if they are unnecessary. Regularly update Guzzle to stay protected against emerging threats.

Patching and Updates

Refer to security advisories and vendor recommendations for patching guidelines and updates to address CVE-2022-31091 effectively.