[CentOS] Several files's checksum change without reason
kadafax
kadafax at gmail.com
Sat Aug 12 21:15:20 UTC 2006
William L. Maltby wrote:
> On Sat, 2006-08-12 at 19:10 +0200, kadafax wrote:
>
>> Hi list,
>> I'm a bit worried here. On a server, Centos 4.3 fully-patched SELinux
>> activated, Osiris (a decentralized scanner for files changes on distant
>> servers) signaled me several changes on files who were not (at first
>> sight) affected by a recent update (the list is below).
>> Is there a logic explanation for those changes to happen ? The "rpm -Va"
>> command does not output md5sum change for those files.
>>
>
> Date/time looks like it might be a cron scheduled event. My bet is
> prelink. Have you looked at the crontabs and/or logs?
>
prelink appears there:
[root at server cron]# ll /etc/cron.daily/
total 76
lrwxrwxrwx 1 root root 28 Jun 29 20:27 00-logwatch ->
../log.d/scripts/logwatch.pl
-rwxr-xr-x 1 root root 418 Feb 21 2005 00-makewhatis.cron
-rwxr-xr-x 1 root root 276 Feb 21 2005 0anacron
-rwxr-xr-x 1 root root 117 Mar 31 2005 epylog.cron
-rwxr-xr-x 1 root root 180 Aug 23 2005 logrotate
-rwxr-xr-x 1 root root 2133 Dec 1 2004 prelink
-rwxr-xr-x 1 root root 104 Jan 1 2006 rpm
-rwxr-xr-x 1 root root 121 Aug 22 2005 slocate.cron
-rwxr-xr-x 1 root root 286 Feb 21 2005 tmpwatch
-rwxr-xr-x 1 root root 158 Feb 18 15:38 yum.cron
Nothing in logs ( grep cron /var/log/messages*)
Is it possible for a cron job to modify binary's checksum and inode ?
>
>> <snip>^2
>>
>
>
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