actionpack Cross-site Scripting vulnerability (GHSA-j838-vfpq-fmf2)
Published: 2017-10-24T18:33:37Z
Aliases: CVE-2013-1857
Severity: MODERATE · CWE: CWE-79

The sanitize helper 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 encoded `:` (colon) characters in URLs, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted scheme name, as demonstrated by including a `&#x3a;` sequence.

Affected packages:
package: ecosystem: RubyGems
name: actionpack
ranges: type: ECOSYSTEM
events: introduced: 0
fixed: 2.3.18
package: ecosystem: RubyGems
name: actionpack
ranges: type: ECOSYSTEM
events: introduced: 3.0.0
fixed: 3.1.12
package: ecosystem: RubyGems
name: actionpack
ranges: type: ECOSYSTEM
events: introduced: 3.2.0
fixed: 3.2.13