Public bug reported:
Ubuntu version: 14.04 LTS (server)
AIDE version: 0.16~a2.git20130520-2
EXPECTED RESULT
===============
The daily cron job should excute properly, generating an email with the AIDE
report for that day.
ACTUALLY RESULT
==============
The daily cron job fails with a bash "unbound variable" error.
DESCRIPTION
===============
I recently upgraded a machine from Ubuntu Server 12.04 LTS to Ubuntu Server
14.04 LTS. After the upgrade I noticed that the AIDE cronjob was failing with
this error:
-----
/etc/cron.daily/aide:
/etc/cron.daily/aide: line 413: NF_ADD: unbound variable
run-parts: /etc/cron.daily/aide exited with return code 1
-----
NF_ADD is explicity defined as an array, but on line 413 it would appear
that a new element is trying to be added to the array based on the
current count of the array:
NF_ADD[${#NF_ADD[*]}]="$line"
However, if the variable/array is empty, then referencing ${#NF_ADD[*]}
produces an "unbound variable" error, and since line #3 of the script
sets the -e option, bash will terminate executeion of the script upon
encountering this error, meaning the AIDE cron.daily script fails to
complete.
The attached patch seems to have fixed the issue for me, though I really
don't know if that is the correct fix, or if it might have other
unintended consequences when run with different options or in a
different environment.
** Affects: aide (Ubuntu)
Importance: Undecided
Status: New
** Tags: patch
** Patch added: "aide.patch"
https://bugs.launchpad.net/bugs/1323827/+attachment/4120904/+files/aide.patch
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https://bugs.launchpad.net/bugs/1323827
Title:
aide cronjob fails with bash unbound variable error
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