Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
10.2.2, 10.2.3, 10.2.4, 11.0.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2
Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3, 11.4.1 HF4, 11.2.1 HF11
Opened: Jan 16, 2014 Severity: 3-Major Related Article:
K15965
Out-of-order TCP packet will be dropped if it occurs during 3-way handshake.
Packet must be retransmitted by client.
Client initiates TCP connection to BIG-IP with ACK segment arriving after (i.e., out-of-order) a second packet. Resultant sequence: 1. Client - BIG-IP : SYN 2. BIG-IP - Client : SYN-ACK 3. Client - BIG-IP : PSH, ACK (w/Segment #2) =-- Out-of-order ; Must be retransmitted. 4. Client - BIG-IP : ACK (w/Segment #1)
None.
Out-of-order segments received before 3WHS is completed are no longer dropped.