Vulnerability identifier: #VU8568

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2016-0752

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Ruby on Rails
Universal components / Libraries / Scripting languages

Vendor: Rails

Description
The vulnerability allows a remote attacker to read arbitrary files on the system.

The vulnerability exists due to improper input validation in Action View. A remote attacker can send a specially crafted request, containing directory traversal sequences (e.g. "../") and view contents of arbitrary file on vulnerable system.

Mitigation
Update to version 3.2.22.1, 4.1.14.1 or 4.2.5.1.

Vulnerable software versions

Ruby on Rails: 3.2.0 - 4.2.5 rc2

---

CPE

• cpe:2.3:a:rails:ruby_on_rails:3.2.0:*:*:*:*:*:*:*

External links
http://groups.google.com/forum/message/raw?msg=ruby-security-ann/335P1DcLG00/JXcBnTtZEgAJ

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?