Google has closed a feature in Apps Engine that allowed traffic to be served unencrypted – a function which a security researcher used to highjack accounts.
The application deployment tool feature allowed developers to deploy their applications over HTTP if they could not connect via HTTPS.
SC reported the flaw last week after it was revealed during a talk by Iowa State University researcher Matthew Sullivan.
Sullivan used his Cookie Cadger tool to steal cookies used during a friend's Google App Engine session, run over the conference's open wireless network.
He used the stolen data to access the account console and modify App Engine data.
“If someone is in admin, you can view the sourcecode, view and edit the datastore. If you use two factor [authentication], it is not going to save you,” he told an audience at Derbycon.
Google quickly revoked HTTP functionality, forcing the application deployment tool to serve only over HTTPS.
It said the change did not affect App Engine applications’ traffic, which developers could configure to serve only over HTTPS and added usage of the insecure feature was low.
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