Bug ID 681527: ASM subsystem error log showing "Unmatched in regex" log in /var/log/asm

Last Modified: Apr 28, 2025

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 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

Fixed In:
14.0.0

Opened: Sep 03, 2017

Severity: 3-Major

Symptoms

Following error is displayed when the user defined signature rule configured as "file_get_contents(": Nov 23 14:36:23 00288646-bigip crit g_server_rpc_handler.pl[18542]: 01310027:2: ASM subsystem error (asm_config_server.pl,F5::ASMConfig::Handler::log_error_and_rollback): Unmatched ( in regex; marked by <-- HERE in m/^.*( <-- HERE .*$/ at /usr/local/share/perl5/F5/ASMConfig/Entity/Base.pm line 135.

Impact

Request logs failed to load with 500 Internal Server Error.

Conditions

The user defined signature rule configured as "file_get_contents("

Workaround

None

Fix Information

No error is displayed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips