GHSA-jp5v-5gx4-jmj9
Ability to forge per-form CSRF tokens in Rails
At a glance
- Published
- Updated
- CVE
- CVE-2020-8166
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Description
It is 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. 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. Workarounds ----------- This is a low-severity security issue. As such, no workaround is necessarily until such time as the application can be upgraded.
Affected packages
| Package | Versions |
|---|---|
| RubyGems · actionpack | introduced 5.0.0, fixed 5.2.4.3 |
| RubyGems · actionpack | introduced 6.0.0, fixed 6.0.3.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-8166 ADVISORY
- https://hackerone.com/reports/732415 WEB
- https://github.com/rails/rails PACKAGE
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2020-8166.yml WEB
- https://groups.google.com/forum/#!topic/rubyonrails-security/NOjKiGeXUgw WEB
- https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw WEB
- https://www.debian.org/security/2020/dsa-4766 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |