The sanitize_css method in
lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the
Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x
before 3.1.12, and 3.2.x before 3.2.13 does not properly handle \n
(newline) characters, which makes it easier for remote attackers to
conduct cross-site scripting (XSS) attacks via crafted Cascading Style
Sheets (CSS) token sequences.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[rubyonrails-security] 20130318 [CVE-2013-1855] XSS vulnerability in sanitize_css in Action Pack
Disclaimer: The entry creation date may reflect when
the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security