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

groups.google.com/g/rubyonrails-security/c/PjU3946mreQ
hackerone.com/reports/789579
nvd.nist.gov/vuln/detail/CVE-2020-8162
www.debian.org/security/2020/dsa-4766

Code Behaviors & Features

Detect and mitigate CVE-2020-8162 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →