1) Cross-site request forgery

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8167

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

This is a regression of CVE-2015-1840.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ActionView: 5.0.0, 5.0.0.1, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.7.1, 5.0.7.2, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.6.1, 5.1.6.2, 5.1.7, 5.2.0, 5.2.1, 5.2.1.1, 5.2.2, 5.2.2.1, 5.2.3, 5.2.4, 5.2.4.1, 5.2.4.2, 6.0.0, 6.0.1, 6.0.2, 6.0.2.1, 6.0.2.2, 6.0.3

CPE

• cpe:2.3:a:rails:actionview:6.0.3:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:6.0.2.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:6.0.2.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:6.0.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:6.0.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:6.0.0:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.4.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.4.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.4:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.3:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.2.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.1.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.2.0:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.7:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.6.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.6.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.6:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.5:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.4:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.3:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.1.0:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.7.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.7.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.7:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.6:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.5:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.4:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.3:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.2:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.0.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionview:5.0.0:*:*:*:*:ruby_on_rails:*:*

External links

https://snyk.io/vuln/SNYK-RUBY-ACTIONVIEW-569601
https://github.com/rails/rails/commit/a20fbf9bc52e9596a675c1071ab3fe052ac4f0dc
https://groups.google.com/forum/#!topic/rubyonrails-security/x9DixQDG9a0

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.