Rack ReDoS Vulnerability in HTTP Accept Headers Parsing

TRUNG BÌNH 6.5CVE-2024-39316 · GHSA-cj83-2ww7-mvq7 · Công bố 02/07/2024 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2024-39316 là lỗ hổng mức TRUNG BÌNH (CVSS 6.5) ảnh hưởng rack, rack (rack).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.86%, cao hơn 58.4% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.1.5 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
rack RubyGems	`≥ 3.1.0, < 3.1.5`	`3.1.5`
rack rack	`≥ 3.1.0, < 3.1.5`	`3.1.5`

Mô tả

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 https://github.com/rack/rack/security/advisories/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.

Mô tả của NVD

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.5, 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). The fix for CVE-2024-26146 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. Users of versions on the 3.1 branch should upgrade to version 3.1.5 to receive the fix.