ADVISORIES

• CVE-2013-1857 (NVD)
• GHSA-j838-vfpq-fmf2
• OSVDB-91454

GEM

actionpack

FRAMEWORK

Ruby on Rails

SEVERITY

CVSS v2.0: 4.3 (Medium)

PATCHED VERSIONS

• ~> 2.3.18
• ~> 3.1.12
• >= 3.2.13

DESCRIPTION

'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 : sequence. A cross-site scripting (XSS) flaw was found in Action Pack. A remote attacker could use this flaw to conduct XSS attacks against users of an application using Action Pack.'