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CVE-2020-8162: Unrestricted Upload of File with Dangerous Type

June 19, 2020 (updated September 25, 2020)

A client side enforcement of server side security vulnerability exists in rails and rails ActiveStorage’s S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.

References

  • nvd.nist.gov/vuln/detail/CVE-2020-8162

Code Behaviors & Features

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Affected versions

All versions before 5.2.4.2, all versions starting from 6.0.0 before 6.0.3.1

Fixed versions

  • 5.2.4.2
  • 6.0.3.1

Solution

Upgrade to versions 5.2.4.2, 6.0.3.1 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-434: Unrestricted Upload of File with Dangerous Type

Source file

gem/rails/CVE-2020-8162.yml

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