Multiple vulnerabilities in actionpack gem for Ruby



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-8164
CVE-2020-8166
CWE-ID CWE-200
CWE-352
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
 actionpack
Web applications / Modules and components for CMS

Vendor Ruby

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU28243

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8164

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the return value of "each", or "each_value", or "each_pair" will return the underlying "untrusted" hash of data that was read from the parameters. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

actionpack: 5.0.0.racecar1 - 6.0.3

CPE2.3 External links

https://snyk.io/vuln/SNYK-RUBY-ACTIONPACK-569600
https://github.com/rails/rails/commit/b3230c500d780b5a5d500cc57496074e1d3d8ea9
https://groups.google.com/forum/#!topic/rubyonrails-security/f6ioe4sdpbY


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.

2) Cross-site request forgery

EUVDB-ID: #VU28244

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2020-8166

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 in the "authenticity_token" meta tag. 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

actionpack: 5.0.0.racecar1 - 6.0.3

CPE2.3
External links

https://snyk.io/vuln/SNYK-RUBY-ACTIONPACK-569599
https://github.com/rails/rails/commit/d124f19287f4892c72ca54da728a781591c6fca1
https://groups.google.com/forum/#!topic/rubyonrails-security/NOjKiGeXUgw


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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