checksecurity / setuid changes, is this a bug or did somebody break in?
- by Fabian Zeindl
I received a mail by checksecurity from my ubuntu 12.04 server with the following content:
--- setuid.today 2012-06-03 06:48:09.892436281 +0200
+++ /var/log/setuid/setuid.new.tmp 2012-06-17 06:47:51.376597730 +0200
@@ -30,2 +30,2 @@
- 131904 4755 2 root root 71280 Wed May 16 07:23:08.0000000000 2012 ./usr/bin/sudo
- 131904 4755 2 root root 71280 Wed May 16 07:23:08.0000000000 2012 ./usr/bin/sudoedit
+ 143967 4755 2 root root 71288 Fri Jun 1 05:53:44.0000000000 2012 ./usr/bin/sudo
+ 143967 4755 2 root root 71288 Fri Jun 1 05:53:44.0000000000 2012 ./usr/bin/sudoedit
@@ -42 +42 @@
- 130507 666 1 root root 0 Sat Jun 2 18:04:57.0752979385 2012 ./var/spool/postfix/dev/urandom
+ 130507 666 1 root root 0 Mon Jun 11 08:47:16.0919802556 2012 ./var/spool/postfix/dev/urandom
First i was worried, then i realized that the change was actually 2 weeks ago, i think there was a sudo-update back then.
Since checksecurity runs in /etc/cron.daily i wondered why i only get that email now. I looked into /var/log/setuid/ and found the following files:
total 32
-rw-r----- 1 root adm 816 Jun 17 06:47 setuid.changes
-rw-r----- 1 root adm 228 Jun 3 06:48 setuid.changes.1.gz
-rw-r----- 1 root adm 328 May 27 06:47 setuid.changes.2.gz
-rw-r----- 1 root root 1248 May 20 06:47 setuid.changes.3.gz
-rw-r----- 1 root adm 4473 Jun 17 06:47 setuid.today
-rw-r----- 1 root adm 4473 Jun 3 06:48 setuid.yesterday
The obvious thing that confuses me is that the file setuid.yesterday is not from yesterday = Jun/16.
Is this a bug?
