Bug ID 755001: IE8 showing Operation Aborted error during Bot Defense challenge

Last Modified: Dec 13, 2023

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

Known Affected Versions:
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, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3

Opened: Jan 09, 2019

Severity: 4-Minor

Symptoms

On same cases, Microsoft Internet Explorer version 8 (IE8) might report the following error message: Unable to open the Internet site http://x.x.x.x/. Operation aborted This is happening only on specific IE8 instances; some other instances do not show the error. The error is displayed when the address includes a hash (#) at the end, and a Bot Defense challenge is used. When there are additional parameters after the hash, the error is not seen.

Impact

Page fails to load due to the Internet Explorer error.

Conditions

-- IE8 is used by the end user. -- Bot Defense is enabled. -- Address includes a hash (#) at the end without any additional parameters after the hash.

Workaround

Applying the following iRule should work around the problem. However, this is applicable only if the client-side application does not expect hash parameters. ===================== when BOTDEFENSE_ACTION { set cookies [HTTP::cookie names] set tscookie_flag "0" foreach aCookie $cookies { if { $aCookie matches_regex {^TS(?:[0-9a-fA-F]{6,12})(?:$|_[0-9]+$)} } { set tscookie_flag "1" } } log local0. "$cookies tscookie_flag $tscookie_flag" set ua [HTTP::header value User-Agent] if {[BOTDEFENSE::action] eq "redirect_challenge" && ( $ua contains "MSIE 6.0" || $ua contains "MSIE 7.0" || $ua contains "MSIE 8.0" )} { BOTDEFENSE::action allow } if {[BOTDEFENSE::action] eq "browser_challenge" && ( $ua contains "MSIE 6.0" || $ua contains "MSIE 7.0" || $ua contains "MSIE 8.0" ) && $tscookie_flag eq "0"} { BOTDEFENSE::action custom_response "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 3.2//EN\"> <html> <head> <meta http-equiv=\"refresh\" content=\"0; url=[HTTP::uri]\"> </head> <body> </body> </html>" } } =====================

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips