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CVE-2020-8166

Good to know:

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Date: July 2, 2020

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.

Language: Ruby

Severity Score

Related Resources (9)

https://github.com/rails/rails
https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw
https://nvd.nist.gov/vuln/detail/CVE-2020-8166
https://www.debian.org/security/2020/dsa-4766
https://security-tracker.debian.org/tracker/CVE-2020-8166
https://hackerone.com/reports/732415
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2020-8166.yml
https://groups.google.com/forum/#!topic/rubyonrails-security/NOjKiGeXUgw
https://www.mend.io/vulnerability-database/CVE-2020-8166

Severity Score

Weakness Type (CWE)

Cross-Site Request Forgery (CSRF)

CWE-352

Top Fix

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Upgrade to version actionpack - 5.2.4.3;actionpack - 6.0.3.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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