Bug ID 452182: Flash client-side rewriting and path truncation

Last Modified: Jul 18, 2026

Affected Product(s):
BIG-IP APM(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, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Fixed In:
11.6.0

Opened: Mar 13, 2014

Severity: 3-Major

Related Article: K15383

Symptoms

Certain requests from rewritten Flash ActionScript 3 files might be missing the '/f5-w-xxx$$/' part of the path. These requests fail and this could adversely affect the functionality of the application.

Impact

Failed requests, broken applications. Security issue: Flash applications could make HTTP request to other domains accessible through Portal Access without checks for cross-domain restrictions.

Conditions

Request URI in Flash code contains enough "../" parts to leave the '/f5-w-xxx$/' sandbox.

Workaround

This could be addressed with an iRule in most cases. If you can identify such a request, you can correct the mangled part of the URI within the HTTP_REQUEST event.

Fix Information

Flash ActionScript 3 rewriter now correctly rewrites URLs containing "../".

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips