Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Fixed In:
13.1.0, 12.1.5
Opened: Oct 20, 2016 Severity: 4-Minor
During an MPTCP connection, if a DATA_ACK or DATA_FIN is received on a subflow that is not currently being used to transmit data, that DATA_ACK or DATA_FIN is ignored. Clients generally respond on the same subflow that they received data on, making this situation somewhat rare.
The DATA_ACK or DATA_FIN is ignored. If the same information is not sent on other subflows, this can cause the connection to hang until the subflow times out.
MPTCP is in use on a connection and a DATA_ACK or DATA_FIN is received on a subflow that is not currently being used to transmit data.
None
Accept DATA_ACK and DATA_FIN on any subflow.