Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP ASM
Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 16.0.0, 16.0.0.1
Fixed In:
16.1.0, 16.0.1, 15.1.0.5, 15.0.1.4, 14.1.2.7, 13.1.3.5
Opened: Apr 17, 2020 Severity: 3-Major
Brute Force Protection (BFP) uses a hash table to store counters of failed logins per IP addresses and usernames. There is a separate hash table for each virtual server. When the hash table is fully utilized and new entries need to be added, the LRU entry is being removed without logging a warning.
No alert is sent when entries are evicted.
This can be encountered when Brute Force Protection is enabled and the hash table reaches its maximum capacity.
None.
Alert/Warning is now announced in ASM logs, describing the status of the hash table.