Last Modified: Nov 07, 2022
Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 126.96.36.199, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.1.0, 188.8.131.52, 184.108.40.206, 220.127.116.11
14.0.0, 18.104.22.168, 13.0.1, 22.214.171.124
Opened: Nov 06, 2017 Severity: 2-Critical
DHCP relay presumes that a flow found via lookup is always a server-side flow of type DHCP relay. Hence TMM can crash when DHCP relay makes a server connection if UDP port 67 is used for another purpose, in which case a wrong DHCP server flow could be selected.
TMM restart causes traffic interruption or failover.
A UDP port 67 is configured for a purpose other than DHCP relay.
Do not use UDP port 67 for other virtual servers, or configure a drop listener on certain VLANs that cannot avoid using UDP port 67.
TMM no longer crashes with DHCP flow validation.