Bug ID 678931: Portal Access: incorrect Microsoft IE emulation mode may be used if it is set by <META> tag

Last Modified: May 01, 2019

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, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 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, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4

Opened: Aug 16, 2017
Severity: 3-Major

Symptoms

Microsoft Internet Explorer may use several emulation modes for HTML pages. The mode can be set by special <META> tag inside the page. This tag may be preceded by another tags with URLs, for example, <LINK> tags. Portal Access inserts auxiliary <SCRIPT> tags before <LINK> tag if this has not been done before. Internet Explorer ignores <META> tags with emulation mode setting after <SCRIPT> tags.

Impact

Wrong emulation mode is used for this HTML page in Internet Explorer. This may lead to incorrect behavior of Web application.

Conditions

- Microsoft Internet Explorer - HTML page with <META http-equiv="X-UA-Compatible" ...> tag and <LINK> tag before this <META> tag

Workaround

Use iRule to move <META http-equiv="X-UA-Compatible" ...> tag in front of any <LINK> tags.

Fix Information

None

Behavior Change