2013-12-30 Instructure Advisory IAC23141 - Username Harvesting

Document created by jordan@instructure.com on Sep 22, 2015Last modified by jordan@instructure.com on Sep 22, 2015
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    SECURITY UPDATE

Canvas + Logo transparent (WHITE)- 300px.png

 

  Release Date:2013-12-30  (Last update can be found below the document title)
  Description:Username Harvesting
  Criticality Level:Moderately Critical ( Less Critical < Critical < Moderately Critical < Highly Critical )
  Impact:Exposure of Sensitive Information
  Systems Affected:Canvas LMS
  Solution Status:Patched
  Discovered By:

Secure Ideas https://www.secureideas.com/

  Relevant Changesets:

https://github.com/instructure/canvas-lms/commit/9c223456101a0cbf975f19af06f5ff17be906c52


 

Summary:

A username harvesting vulnerability was reported by a third party. This vulnerability could potentially allow an attacker to discover what usernames are valid Canvas accounts, narrowing the required scope of a second attack.

 

Status:

Fixed in Canvas Cloud. Users of Canvas CV are encouraged to either update to the most recent stable code or apply the patch manually.

 

 


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