Bug ID 842669: Syslog-ng / systemd-journald cannot handle logs with embedded newlines, write trailing content to /var/log/user.log

Last Modified: Apr 17, 2024

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

Known Affected Versions:
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, 15.1.10.4, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2

Opened: Oct 24, 2019

Severity: 2-Critical

Symptoms

Systemd-journald cannot handle logs with embedded newlines, write trailing content to /var/log/user.log. Bare ')' being logged to /var/log/user.log., for example: cat /var/log/user.log [...]: Deleting file /shared/core/*.core.* [...]: Deleting file /shared/core/*.core.* [...] ) [...] )

Impact

The logging subsystem accepts syslog messages with embedded newlines, and writes first line to the appropriate file, and remaining lines to both /var/log/user.log and /var/log/messages

Conditions

This occurs when the system logs syslog messages containing embedded newlines, such as - The cron process tries and fails to send an email because of output from a cron script. - audit log entries when editing irules - Modifying the syslog 'include' configuration - Applying ASM policy configuration change - GTM.debugprobelogging output from big3d - iqsyncer mcpd message debug output (log.gtm.level=debug)

Workaround

View the logs using journalctl

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips