Remote code execution in ActionView framework for Ruby on Rails



Published: 2020-05-26
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-8163
CWE-ID CWE-94
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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ActionView
Server applications / Frameworks for developing and running applications

Vendor Rails

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Code Injection

EUVDB-ID: #VU28242

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-8163

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can control the "locals" argument of a "render" call and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ActionView: 0.9.1 - 5.0.0.1


CPE2.3 External links

http://snyk.io/vuln/SNYK-RUBY-ACTIONVIEW-569156
http://groups.google.com/forum/#!topic/rubyonrails-security/hWuKcHyoKh0

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. However, proof of concept for this vulnerability is available.



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