Bug ID 713934: Using iRule 'DNS::question name' to shorten the name in DNS_REQUEST may result malformed TC response

Last Modified: Feb 15, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP DNS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 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, 14.0.0, 14.0.0.1, 14.0.0.2

Fixed In:
14.1.0, 14.0.0.3, 13.1.0.8, 12.1.3.6

Opened: Apr 06, 2018
Severity: 3-Major

Symptoms

Received malformed Truncated DNS response.

Impact

DNS request might not be resolved correctly.

Conditions

-- Using iRule 'DNS::question name' to shorten the name. -- DNS response is longer than 4096 UDP limit.

Workaround

There is no workaround at this time.

Fix Information

In this release, when DNS::query name changes the query name, the software ensures that the request is updated with proper lengths.

Behavior Change