Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP AFM
Known Affected Versions:
11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 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
Opened: May 08, 2014 Severity: 2-Critical
If a DoS whitelist entry has an IP protocol specified, and IP fragments are received for that IP protocol, then the whitelist entry is not matched correctly. This can cause the whitelist to miss such packets.
In this situation, AFM DoS rate limits might rate-limit whitelisted fragmented packets.
AFM DoS whiteList entry with an IP protocol field specified.
To avoid this, do not specify an IP protocol for a DoS whitelist entry.
AFM DoS white lists will now correctly process IP fragments for white list entries with an IP protocol specified.