Path traversal in Rails Action Mailer for Ruby on Rails

1) Path traversal

EUVDB-ID: #VU32465

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-7819

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Multiple directory traversal vulnerabilities in server.rb in Sprockets before 2.0.5, 2.1.x before 2.1.4, 2.2.x before 2.2.3, 2.3.x before 2.3.3, 2.4.x before 2.4.6, 2.5.x before 2.5.1, 2.6.x and 2.7.x before 2.7.1, 2.8.x before 2.8.3, 2.9.x before 2.9.4, 2.10.x before 2.10.2, 2.11.x before 2.11.3, 2.12.x before 2.12.3, and 3.x before 3.0.0.beta.3, as distributed with Ruby on Rails 3.x and 4.x, allow remote attackers to determine the existence of files outside the application root via a ../ (dot dot slash) sequence with (1) double slashes or (2) URL encoding.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Action Mailer: 2.0.0 - 2.3.2.1

CPE2.3

• cpe:2.3:a:rails:actionmailer:2.0.0:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionmailer:2.0.1:*:*:*:*:ruby_on_rails:*:*
• cpe:2.3:a:rails:actionmailer:2.0.2:*:*:*:*:ruby_on_rails:*:*

External links

https://lists.opensuse.org/opensuse-updates/2014-11/msg00103.html
https://lists.opensuse.org/opensuse-updates/2014-11/msg00105.html
https://lists.opensuse.org/opensuse-updates/2014-11/msg00110.html
https://lists.opensuse.org/opensuse-updates/2014-11/msg00111.html
https://groups.google.com/forum/message/raw?msg=rubyonrails-security/doAVp0YaTqY/aHFngBqNBoAJ
https://groups.google.com/forum/message/raw?msg=rubyonrails-security/wQBeGXqGs3E/JqUMB6fhh3gJ

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.