Ember.js XSS Vulnerability With {{link-to}} Helper in Non-block Form
Published: February 07, 2014
SECURITY IDENTIFIERS
- CVE: CVE-2014-0046 (NVD)
- GHSA: GHSA-4q53-fqhc-cr46
- Vendor Advisory: https://groups.google.com/forum/#!topic/ember-security/1h6FRgr8lXQ
GEM
UNAFFECTED VERSIONS
< 1.2.0
PATCHED VERSIONS
~> 1.2.2
>= 1.3.2
DESCRIPTION
In general, Ember.js escapes or strips any user-supplied content before inserting it in strings that will be sent to innerHTML. However, a change made to the implementation of the {{link-to}} helper means that any user-supplied data bound to the {{link-to}} helper's title attribute will not be escaped correctly.
In applications that use the {{link-to}} helper in non-block form and bind the title attribute to user-supplied content, a specially-crafted payload could execute arbitrary JavaScript in the context of the current domain ("XSS").
All users running an affected release and binding user-supplied data to the {{link-to}} helper's title attribute should either upgrade or use one of the workarounds immediately.