Bug ID 1015117: Headers are corrupted during modification/insertion if a mix of end-of-line markers <CRLF> and <LF> are used

Last Modified: May 22, 2021

Bug Tracker

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

Known Affected Versions:, 16.0.1,, 16.0.0, 15.1.3,,,,, 14.1.4, 13.1.4,,,

Opened: Apr 28, 2021
Severity: 4-Minor


HTTP header corruption occurs after insertion/modification using an iRule in HTTP Headers which contain mixed end-of-line markers <CRLF> and <LF>.


Inserted headers get concatenated in such a way that the HTTP request header gets corrupted.


- HTTP virtual server - An iRule inserts an HTTP Request header - An HTTP request contains some lines that end with <CRLF> and some that end with <LF>


Use HTTP headers with proper end-of-line markers in compliance with HTTP RFC

Fix Information


Behavior Change