A vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow an unauthenticated, unprivileged, network-based attacker to cause various denials of services leading to targeted information disclosure, modification of any component of the NorthStar system, including managed systems, and full denial of services to any systems under management which NorthStar interacts with using read-only or read-write credentials.