CVE-2020-8162 Information

Description

A client side enforcement of server side security vulnerability exists in rails 5.2.4.2 and rails 6.0.3.1 ActiveStorage’s S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.

CVSS Vector

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

Reference

https://groups.google.com/g/rubyonrails-security/c/PjU3946mreQ https://hackerone.com/reports/789579 https://www.debian.org/security/2020/dsa-4766

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5