CVE-2023-45286 Explained : Impact and Mitigation

A race condition in go-resty can result in HTTP request body disclosure across requests. This condition can be triggered by calling sync.Pool.Put with the same *bytes.Buffer more than once, when request retries are enabled and a retry occurs. The call to sync.Pool.Get will then return a bytes.Buffer that hasn't had bytes.Buffer.Reset called on it. This dirty buffer will contain the HTTP request body from an unrelated request, and go-resty will append the current HTTP request body to it, sending two bodies in one request. The sync.Pool in question is defined at package level scope, so a completely unrelated server could receive the request body.

Understanding CVE-2023-45286

This vulnerability, assigned CVE-2023-45286, affects the github.com/go-resty/resty/v2 container in versions less than 2.11.0. It leads to HTTP request body disclosure across multiple requests due to a race condition in go-resty.

What is CVE-2023-45286?

The CVE-2023-45286 vulnerability arises from a race condition in go-resty that enables the disclosure of HTTP request bodies across different requests. By manipulating the *bytes.Buffer within the sync.Pool, an attacker can expose sensitive information.

The Impact of CVE-2023-45286

The impact of CVE-2023-45286 is significant as it allows malicious actors to access and potentially exploit sensitive data transmitted via HTTP requests. This could lead to data breaches and unauthorized access to confidential information.

Technical Details of CVE-2023-45286

The following technical details outline the vulnerability in github.com/go-resty/resty/v2:

Vulnerability Description

The vulnerability allows HTTP request body disclosure when a race condition occurs in go-resty, resulting in the mixing of request bodies from different requests.

Affected Systems and Versions

Affected Systems: github.com/go-resty/resty/v2
Affected Versions: 2.10.0 (less than 2.11.0)

Exploitation Mechanism

Exploiting this vulnerability requires triggering a specific race condition by calling sync.Pool.Put with the same *bytes.Buffer more than once and enabling request retries in go-resty.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-45286, it is crucial to take immediate and long-term security measures:

Immediate Steps to Take

Update to version 2.11.0 or newer to address the vulnerability.
Review and validate HTTP request handling mechanisms within the affected systems.

Long-Term Security Practices

Regularly monitor and update dependencies to patch known vulnerabilities.
Implement secure coding practices to prevent race conditions and data leakage.

Patching and Updates

Ensure timely application of patches and updates provided by github.com/go-resty/resty/v2 to fix CVE-2023-45286.