CVE-2020-8166: CSRF
First published: Thu Jul 02 2020(Updated: )
A CSRF forgery vulnerability exists in rails < 5.2.5, rails < 6.0.4 that makes it possible for an attacker to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/rails | 2:5.2.2.1+dfsg-1+deb10u3 2:5.2.2.1+dfsg-1+deb10u5 2:6.0.3.7+dfsg-2+deb11u2 2:6.1.7.3+dfsg-1 2:6.1.7.3+dfsg-2 | |
| Rubyonrails Rails | <5.2.4.3 | |
| Rubyonrails Rails | >=6.0.0<6.0.3.1 | |
| Debian Debian Linux | =10.0 |
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Reference Links
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released
- https://github.com/rails/rails/commit/d124f19287f4892c72ca54da728a781591c6fca1
- https://github.com/rails/rails/commit/3e98819e20bc113343d4d4c0df614865ad5a9d3a
- https://security-tracker.debian.org/tracker/CVE-2020-8166
- https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw
- https://hackerone.com/reports/732415
- https://www.debian.org/security/2020/dsa-4766
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-8166.
What is the severity of CVE-2020-8166?
The severity of CVE-2020-8166 is not specified.
Which software versions are affected by CVE-2020-8166?
The software versions affected by CVE-2020-8166 are rails < 5.2.5 and rails < 6.0.4.
How does the CSRF forgery vulnerability in CVE-2020-8166 work?
The CSRF forgery vulnerability in CVE-2020-8166 allows an attacker to forge a per-form CSRF token using a global CSRF token.
How can I fix the CSRF forgery vulnerability in rails?
To fix the CSRF forgery vulnerability in rails, update to version 5.2.5 or 6.0.4 or higher.
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