Possible Content Security Policy bypass in Action Dispatch
Package
Affected versions
>= 5.2.0, < 7.0.8.7
>= 7.1.0, < 7.1.5.1
>= 7.2.0, < 7.2.2.1
>= 8.0.0, < 8.0.0.1
Patched versions
7.0.8.7
7.1.5.1
7.2.2.1
8.0.0.1
Description
Published to the GitHub Advisory Database
Dec 10, 2024
Reviewed
Dec 10, 2024
Last updated
Dec 10, 2024
There is a possible Cross Site Scripting (XSS) vulnerability in the
content_security_policyhelper in Action Pack.Impact
Applications which set Content-Security-Policy (CSP) headers dynamically from untrusted user input may be vulnerable to carefully crafted inputs being able to inject new directives into the CSP. This could lead to a bypass of the CSP and its protection against XSS and other attacks.
Releases
The fixed releases are available at the normal locations.
Workarounds
Applications can avoid setting CSP headers dynamically from untrusted input, or can validate/sanitize that input.
Credits
Thanks to ryotak for the report!
References