RubySec

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CVE-2022-44571 (rack): Denial of Service Vulnerability in Rack Content-Disposition parsing

ADVISORIES

GEM

rack

PATCHED VERSIONS

  • ~> 2.0.9, >= 2.0.9.2
  • ~> 2.1.4, >= 2.1.4.2
  • ~> 2.2.6, >= 2.2.6.1
  • >= 3.0.4.1

DESCRIPTION

There is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This vulnerability has been assigned the CVE identifier CVE-2022-44571.

Versions Affected: >= 2.0.0 Not affected: None. Fixed Versions: 2.0.9.2, 2.1.4.2, 2.2.6.1, 3.0.4.1

Impact

Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.

Workarounds

There are no feasible workarounds for this issue.