Juniper Junos OS 9.1 through 11.4 before 11.4R11 12.1 before R10 12.1X44 before D40 12.1X46 before D30 12.1X47 before D11 and 12.147-D15 12.1X48 before D41 and D62 12.2 before R8 12.2X50 before D70 12.3 before R6 13.1 before R4-S2 13.1X49 before D49 13.1X50 before 30 13.2 before R4 13.2X50 before D20 13.2X51 before D25 13.2X52 before D15 13.3 before R2 and 14.1 before R1 when supporting 4-byte AS numbers and a BGP peer does not allows remote attackers to cause a denial of service (memory corruption and RDP routing process crash and restart) via crafted transitive attributes in a BGP UPDATE.