CVE-2024-39316
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.
Does this matter?
Lower severity and a low EPSS score (0.86%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.86% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1333
- Affected
- rack/rack
- Source
- security-advisories@github.com
References
- https://github.com/rack/rack/commit/412c980450ca729ee37f90a2661f166a9665e058Patch
- https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8fNot Applicable
- https://github.com/rack/rack/security/advisories/GHSA-cj83-2ww7-mvq7Vendor Advisory
- https://github.com/rack/rack/commit/412c980450ca729ee37f90a2661f166a9665e058Patch
- https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8fNot Applicable
- https://github.com/rack/rack/security/advisories/GHSA-cj83-2ww7-mvq7Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.