Bug ID 526519: APM sessiondump command can produce binary data

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:

Opened: Jun 04, 2015
Severity: 3-Major


New session variable "session.access.scope" includes a null character after the value. This will result in piped grep commands from sessiondump such as: sessiondump <args> | grep <search value> returning the text: Binary file (standard input) matches instead of the expected output. Note that this problem exists in APM version 12.


Administrator cannot use "grep" command with sessiondump.


Using sessiondump command with pipe to grep.


Use "-a" option with grep. For example: sessiondump <args> | grep -a <search value>

Fix Information

The sessiondump utility was modified. The NULL termination byte of a NULL-terminated string is no longer printed. Furthermore, non-printable data is now printed as a hexdump, instead of raw binary data.

Behavior Change