CVE-2020-5216 Information

Description

In Secure Headers (RubyGem secure_headers) a directive injection vulnerability is present in versions before 3.9.0 5.2.0 and 6.3.0. If user-supplied input was passed into append/override_content_security_policy_directives a newline could be injected leading to limited header injection. Upon seeing a newline in the header rails will silently create a new Content-Security-Policy header with the remaining value of the original string. It will continue to create new headers for each newline. This has been fixed in 6.3.0 5.2.0 and 3.9.0.

CVSS Vector

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

Reference

https://github.com/twitter/secure_headers/commit/301695706f6a70517c2a90c6ef9b32178440a2d0 https://github.com/twitter/secure_headers/security/advisories/GHSA-w978-rmpf-qmwg

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.8