Possible DoS Vulnerability with Range Header in Rack

There is a possible DoS vulnerability relating to the Range request header in Rack. This vulnerability has been assigned the CVE identifier CVE-2024-26141.

Versions Affected: >= 1.3.0. Not affected: < 1.3.0 Fixed Versions: 3.0.9.1, 2.2.8.1

Impact ------ Carefully crafted Range headers can cause a server to respond with an unexpectedly large response. Responding with such large responses could lead to a denial of service issue.

Vulnerable applications will use the Rack::File middleware or the Rack::Utils.byteranges methods (this includes Rails applications).

Releases -------- The fixed releases are available at the normal locations.

Workarounds ----------- There are no feasible workarounds for this issue.

Patches ------- To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.

3-0-range.patch - Patch for 3.0 series 2-2-range.patch - Patch for 2.2 series

Credits -------

Thank you oooooooq for the report and patch