Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.0, 12.1.1, 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
Fixed In:
13.0.0, 12.1.3.7
Opened: Sep 08, 2016 Severity: 2-Critical
Incorrect use of HTTP::collect leads to TMM hang. Watchdog kills TMM on timeout leading to core.
Traffic disrupted while tmm restarts.
If the iRule requests non-incremental HTTP::collect or amount greater than content-length when the whole-body has already been received, then this leads to TMM hang.
Add an HTTP::release after the HTTP::payload instruction; Or Use incremental HTTP::collect commands.
HTTP state machine was modified to handle non-incremental collects and condition where whole body has been received when the collect is issued.