Bug ID 604977: Wrong alert when DTLS cookie size is 32

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.6.1, 11.6.1 HF1, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2, 11.6.1 HF2, 11.5.4 HF3

Opened: Jul 14, 2016

Severity: 3-Major

Related Article: K08905542

Symptoms

When ServerSSL profile using DTLS receives a cookie with length of 32 bytes, the system reports a fatal alert.

Impact

DTLS with cookie size 32-byte fails.

Conditions

Another LTM with ClientSSL profile issues 32-byte long cookie.

Workaround

None.

Fix Information

DTLS now accepts cookies with a length of 32 bytes.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips