Bug ID 517178: BIG-IP system as SAML Service Provider cannot process some messages from SimpleSAMLphp under certain conditions

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5

Fixed In:
12.0.0, 11.6.0 HF6

Opened: Apr 08, 2015
Severity: 3-Major
Related AskF5 Article:


When the BIG-IP system is used as Service Provider with SimpleSAMLphp as Identity Provider, processing of signed artifact response messages from IdP may fail with following error: Digest of SignedInfo mismatch.


User SSO may not work.


- BIG-IP system is configured as SP. - Artifact binding is used for SSO. - Artifact response message from IdP is signed.


Use POST binding instead of Artifact.

Fix Information

The BIG-IP system configured as SAML Service Provider can now correctly process messages from SimpleSAMLphp so that user SSL works as expected.

Behavior Change