Juniper Junos LAST_ACK State DoS (JSA10686)
High Nessus Plugin ID 85226
SynopsisThe remote device is missing a vendor-supplied security patch.
DescriptionAccording to its self-reported version number, the remote Juniper Junos device is affected by a denial of service vulnerability due to the improper handling of TCP connection transitions to the LAST_ACK state when the device has more data to send. A remote attacker can exploit this cause the socket to be stuck in the LAST_ACK state indefinitely, leading to exhaustion of memory buffers (mbufs) and connections.
Note that Nessus has not tested for this issue or the host configuration but has instead relied only on the application's self-reported version number.
SolutionApply the relevant Junos software release or workaround referenced in Juniper advisory JSA10686.