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CVW-2014-3624 details a potential Traffic Server vulnerability due to a change in how remap works This error has been fixed (TS-2677) in version 5.1.1 and requires no action on the part of the administrator beyond installing 5.1.1.
5.1.2 Security Update
Due to security issues in 5.1.1 a 5.1.2 release has been issued. It should require no changes to replace 5.1.1.