Bug ID 769029: Non-admin users fail to create tmp dir under /var/system/tmp/tmsh

Last Modified: Sep 14, 2023

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

Known Affected Versions:
12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 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, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 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

Fixed In:
15.1.0

Opened: Apr 04, 2019

Severity: 3-Major

Symptoms

The cron.daily/tmpwatch script deletes the /var/system/tmp/tmsh directory. After some time, the tmsh directory is created again as part of another cron job. During the interval, if a non-admin accesses tmsh, tmsh creates the /tmp/tmsh directory with that user's permissions, which creates issues for subsequently non-admin user logons.

Impact

The first non-admin user can access tmsh. Other, subsequent non-admin users receive the following error: 01420006:3: Can't create temp directory, /var/system/tmp/tmsh/SKrmSB, errno 13] Permission denied. After some time this /var/system/tmp/tmsh permission is updated automatically.

Conditions

Try to access the tmsh from non-admin users when /var/system/tmp/tmsh is deleted.

Workaround

To prevent this issue, run the following in one of two ways: -- As root user in bash shell. -- As a cronjob running in a per-case frequency. root@bigip# export TARGET=/var/system/tmp/tmsh; [ ! -d $TARGET ] && mkdir -p $TARGET; chmod 1777 $TARGET; unset TARGET

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips