GHSA-cj83-2ww7-mvq7: Rack ReDoS Vulnerability in HTTP Accept Headers Parsing

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1. GitHub Advisory Database
2. GitHub Reviewed
3. CVE-2024-39316

Rack ReDoS Vulnerability in HTTP Accept Headers Parsing

Moderate severity GitHub Reviewed Published Jul 2, 2024 in rack/rack • Updated Jul 3, 2024

Package

Affected versions

>= 3.1.0, < 3.1.5

Description

Summary

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the Rack::Request::Helpers module when parsing HTTP Accept headers. This vulnerability can be exploited by an attacker sending specially crafted Accept-Encoding or Accept-Language headers, causing the server to spend excessive time processing the request and leading to a Denial of Service (DoS).

Details

The fix for GHSA-54rr-7fvw-6x8f was not applied to the main branch and thus while the issue was fixed for the Rack v3.0 release series, it was not fixed in the v3.1 release series until v3.1.5.

References

• GHSA-54rr-7fvw-6x8f
• GHSA-cj83-2ww7-mvq7
• https://nvd.nist.gov/vuln/detail/CVE-2024-39316
• rack/rack@412c980

Published to the GitHub Advisory Database

Jul 3, 2024