Last Modified: Jul 12, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1
Fixed In:
13.1.3.2
Opened: Aug 09, 2019 Severity: 3-Major
When SIP ALG processes a non-registered subscriber SIP outbound call, the ingress queue counter may underflow. This is interpreted as ingress queue full and the rest of message will be dropped.
SIP ALG incorrectly detects the ingress queue is full and stops processing the rest of SIP ALG traffic.
SIP ALG processes non registered subscriber SIP outbound calls (nonregister-subscriber-callout option is enabled in SIP session profile).
None
When SIP ALG processes non registered subscriber SIP call, the ingress queue counter is handled correctly.