Bug ID 514061: False positive scenario causes SMTP transactions to hang and eventually reset.

Last Modified: Apr 28, 2025

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

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8

Fixed In:
12.0.0, 11.6.1, 11.5.3 HF2

Opened: Mar 24, 2015

Severity: 3-Major

Related Article: K17562

Symptoms

Upon specific SMTP traffic, connection hangs and eventually resets.

Impact

Connection hangs and eventually resets.

Conditions

SMTP profile with 'protocol security' turned on is attached to the virtual server, and the response is processed in bulk.

Workaround

None.

Fix Information

This release fixes a scenario in which SMTP transactions were hanging and blocked upon specific traffic.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips