erubis is an implementation of eRuby and has the following features:
Affected versions of the package are vulnerable to Cross-site Scripting (XSS). Single quotes were not properly escaped in the
helpers/rails_helper.rb files. The Erubis Documentation shows missing escaping.
These attacks are possible by escaping the context of the web application and injecting malicious scripts in an otherwise trusted website. These scripts can introduce additional attributes (say, a "new" option in a dropdown list or a new link to a malicious site) and can potentially execute code on the clients side, unbeknown to the victim. This occurs when characters like
' are not escaped properly.
There are a few types of XSS:
- Persistent XSS is an attack in which the malicious code persists into the web app’s database.
- Reflected XSS is an which the website echoes back a portion of the request. The attacker needs to trick the user into clicking a malicious link (for instance through a phishing email or malicious JS on another page), which triggers the XSS attack.
There is no fix version for
Do your applications use this vulnerable package?
- Snyk Security Research Team
- Snyk ID
- 08 Nov, 2017
- 22 Jan, 2018