HIGH7.5

GHSA-hg78-4f6x-99wq

Rack vulnerable to Denial of Service

Quick fix

GHSA-hg78-4f6x-99wq — rack: upgrade to the fixed version with the command below.

bundle update rack

Details

There is a possible DoS vulnerability in the multipart parser in Rack before 2.0.6. Specially crafted requests can cause the multipart parser to enter a pathological state, causing the parser to use CPU resources disproportionate to the request size.

Are you affected?

Enter the version of the package you're using.

Affected packages

RubyGems/rack

Introduced in: 2.0.4Fixed in: 2.0.6

Fixbundle update rack

References

https://nvd.nist.gov/vuln/detail/CVE-2018-16470[ADVISORY]
https://access.redhat.com/errata/RHSA-2019:3172[WEB]
https://github.com/rack/rack[PACKAGE]
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2018-16470.yml[WEB]
https://groups.google.com/forum/#!msg/rubyonrails-security/U_x-YkfuVTg/xhvYAmp6AAAJ[WEB]
https://groups.google.com/forum/#!topic/ruby-security-ann/Dz4sRl-ktKk[WEB]