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Mitigate CVE-2020-8166 by Backporting Patch from Rails 5.2 #59

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abhisek opened this issue Aug 8, 2020 · 0 comments

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abhisek commented Aug 8, 2020

It is possible to possible to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token for any action for that session. This vulnerability has been assigned the CVE identifier CVE-2020-8166.

https://groups.google.com/forum/#!topic/rubyonrails-security/NOjKiGeXUgw

Impact

Given the ability to extract the global CSRF token, an attacker would be able to construct a per-form CSRF token for that session.

This is a low-severity security issue. As such, no workaround is necessarily until such time as the application can be upgraded.

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