Bug ID 910253: BD error on HTTP response after upgrade

Last Modified: May 19, 2024

Affected Product(s):
BIG-IP ASM, Install/Upgrade(all modules)

Known Affected Versions:
15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 16.0.0,, 16.0.1

Fixed In:
16.1.0,, 15.1.3

Opened: May 19, 2020

Severity: 3-Major


After upgrade, some requests can cause BD errors on response: BEM|ERR |May 19 17:49:55.800|0983|response_header_accumulator.c:0200|Error: CookieMgrBuildCookie failed. ans 1 job 2957561040 IO_PLUGIN|ERR |May 19 17:49:55.800|0983|io_plugin.c:3320|TMEVT_RESPONSE: Cannot build a ts cookie.


For some requests, the response can arrive truncated or not arrive at all.


-- Upgrading BIG-IP systems to v15.0.0 or later from versions earlier than v15.0.0. -- ASM policy is configured on a virtual server.


Add an iRule that deletes ASM cookies: when HTTP_REQUEST { set cookies [HTTP::cookie names] foreach aCookie $cookies { if {$aCookie matches_regex {^TS(?:[0-9a-fA-F]{6,8})(?:$|_[0-9]+$)}} { HTTP::cookie remove $aCookie } } } Note: Performing this workaround affects cookie-related violations (they may need to be disabled to use this workaround), session, and login protection.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips