* Path ignored but syscall event still logged
@ 2011-12-20 17:55 Max Williams
2011-12-20 19:02 ` Steve Grubb
0 siblings, 1 reply; 12+ messages in thread
From: Max Williams @ 2011-12-20 17:55 UTC (permalink / raw)
To: linux-audit
[-- Attachment #1.1: Type: text/plain, Size: 6117 bytes --]
Hi All,
I have a system that is logging many events for a path that I think should be ignored...
[root@host1 ~]# auditctl -l
LIST_RULES: exit,always dir=/etc/audit (0xa) perm=wa key=auditd_configuration
LIST_RULES: exit,always dir=/etc/audisp (0xb) perm=wa key=auditd_configuration
LIST_RULES: exit,always watch=/etc/libaudit.conf perm=wa key=auditd_configuration
LIST_RULES: exit,always watch=/etc/sysconfig/auditd perm=wa key=auditd_configuration
LIST_RULES: exit,never dir=/etc/lvm/cache (0xe) syscall=all
LIST_RULES: exit,never dir=/opt (0x4) syscall=all
LIST_RULES: exit,never dir=/tmp (0x4) syscall=all
LIST_RULES: exit,never dir=/naab1 (0x6) syscall=all
LIST_RULES: exit,never dir=/naab2 (0x6) syscall=all
LIST_RULES: exit,never dir=/ab1 (0x4) syscall=all
LIST_RULES: exit,never dir=/ab2 (0x4) syscall=all
LIST_RULES: exit,always perm=a key=file_attributes
LIST_RULES: exit,always arch=3221225534 (0xc000003e) a1=1074292226 (0x40086602) key=file_attributes syscall=ioctl
LIST_RULES: exit,always arch=3221225534 (0xc000003e) a1=-2146933247 (0x80086601) key=file_attributes syscall=ioctl
LIST_RULES: exit,always arch=3221225534 (0xc000003e) exit=-13 (0xfffffff3) key=invalid_logical_access syscall=open
LIST_RULES: exit,always dir=/bin (0x4) perm=wa key=bin_modification
LIST_RULES: exit,always dir=/boot (0x5) perm=wa key=boot_modification
LIST_RULES: exit,always dir=/etc (0x4) perm=wa key=etc_modification
LIST_RULES: exit,always dir=/home (0x5) perm=wa key=home_modification
LIST_RULES: exit,always dir=/lib (0x4) perm=wa key=lib_modification
LIST_RULES: exit,always dir=/lib64 (0x6) perm=wa key=lib64_modification
LIST_RULES: exit,always dir=/root (0x5) perm=wa key=root_modification
LIST_RULES: exit,always dir=/sbin (0x5) perm=wa key=sbin_modification
LIST_RULES: exit,always dir=/usr (0x4) perm=wa key=usr_modification
LIST_RULES: exit,always dir=/var/spool/at (0xd) perm=wa key=misc_var
LIST_RULES: exit,always dir=/var/spool/cron (0xf) perm=wa key=misc_var
LIST_RULES: exit,never dir=/var (0x4) syscall=all
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=dir_operations syscall=mkdir,rmdir,unlinkat
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=link_operation syscall=rename,link,unlink,symlink
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=special_device_creation syscall=mknod,mknodat
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=mount_operation syscall=mount,umount2
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=kernel_module syscall=create_module,init_module,delete_module
LIST_RULES: exclude,always msgtype=CRED_ACQ (0x44f)
LIST_RULES: exclude,always msgtype=CRED_DISP (0x450)
LIST_RULES: exclude,always msgtype=CRYPTO_KEY_USER (0x964)
LIST_RULES: exclude,always msgtype=CRYPTO_SESSION (0x967)
LIST_RULES: exclude,always msgtype=LOGIN (0x3ee)
LIST_RULES: exclude,always msgtype=USER_ACCT (0x44d)
LIST_RULES: exclude,always msgtype=USER_AUTH (0x44c)
LIST_RULES: exclude,always msgtype=USER_CMD (0x463)
LIST_RULES: exclude,always msgtype=USER_END (0x452)
LIST_RULES: exclude,always msgtype=USER_LOGIN (0x458)
LIST_RULES: exclude,always msgtype=USER_START (0x451)
[root@host1 ~]# tail /var/log/audit/audit.log
node=host1.domain type=PATH msg=audit(1324401918.113:223550509): item=3 name="checkpoint.1568280a-4eef7e3f-38e9.102.138" inode=30958573 dev=fd:0d mode=0100660 ouid=3534 ogid=9001 rdev=00:00
node=host1.domain type=PATH msg=audit(1324401918.113:223550510): item=2 name="temp_checkpoint.checkpoint.1568280a-4eef7e3f-38d2.76.138" inode=30958636 dev=fd:0d mode=0100660 ouid=3534 ogid=9001 rdev=00:00
node=host1.domain type=PATH msg=audit(1324401918.113:223550510): item=3 name="checkpoint.1568280a-4eef7e3f-38d2.76.138" inode=30958614 dev=fd:0d mode=0100660 ouid=3534 ogid=9001 rdev=00:00
node=host1.domain type=PATH msg=audit(1324401918.113:223550509): item=4 name="checkpoint.1568280a-4eef7e3f-38e9.102.138" inode=30958644 dev=fd:0d mode=0100660 ouid=3534 ogid=9001 rdev=00:00
node=host1.domain type=PATH msg=audit(1324401918.113:223550510): item=4 name="checkpoint.1568280a-4eef7e3f-38d2.76.138" inode=30958636 dev=fd:0d mode=0100660 ouid=3534 ogid=9001 rdev=00:00
node=host1.domain type=SYSCALL msg=audit(1324401918.113:223550511): arch=c000003e syscall=82 success=yes exit=0 a0=7ecdb0 a1=7d10e0 a2=7f6c0782dcd4 a3=0 items=4 ppid=14614 pid=16951 auid=7463 uid=3534 gid=9001 euid=3534 suid=3534 fsuid=3534 egid=9001 sgid=9001 fsgid=9001 tty=(none) ses=9372 comm="db-update.impl." exe="/var/some-app/some-app-V3-0-3/gcc4p64/db_v2/bin/db-update.impl.gcc4p64" key="link_operation"
node=host1.domain type=SYSCALL msg=audit(1324401918.113:223550512): arch=c000003e syscall=82 success=yes exit=0 a0=9a6e50 a1=92e9f0 a2=7fe84e682cd4 a3=0 items=4 ppid=14595 pid=14937 auid=7463 uid=3534 gid=9001 euid=3534 suid=3534 fsuid=3534 egid=9001 sgid=9001 fsgid=9001 tty=(none) ses=10226 comm="multitool.impl." exe="/var/some-app/some-app-V3-0-3/gcc4p64/bin/multitool" key="link_operation"
node=host1.domain type=CWD msg=audit(1324401918.113:223550511): cwd="/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-serial/1568280a-4eef7e3f-3873"
node=host1.domain type=CWD msg=audit(1324401918.113:223550512): cwd="/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-serial/1568280a-4ef0423c-38fe"
node=host1.domain type=PATH msg=audit(1324401918.113:223550511): item=0 name="/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-serial/1568280a-4eef7e3f-3873" inode=30932995 dev=fd:0d mode=040755 ouid=3534 ogid=9001 rdev=00:00
[root@host1 ~]#
I'm referring to event ID 223550511 (key is link_operation) in the logs which is using a path of '/naab1/...'
How come this event is not ignored due to the 8th rule? I think I'm missing something.
Many thanks,
Max
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
[-- Attachment #1.2: Type: text/html, Size: 10393 bytes --]
[-- Attachment #2: Type: text/plain, Size: 0 bytes --]
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Path ignored but syscall event still logged
2011-12-20 17:55 Path ignored but syscall event still logged Max Williams
@ 2011-12-20 19:02 ` Steve Grubb
2011-12-21 12:17 ` Max Williams
0 siblings, 1 reply; 12+ messages in thread
From: Steve Grubb @ 2011-12-20 19:02 UTC (permalink / raw)
To: linux-audit
On Tuesday, December 20, 2011 12:55:49 PM Max Williams wrote:
> How come this event is not ignored due to the 8th rule? I think I'm missing
> something.
One piece of information is missing. The enforcement of the audit policy is done
by the kernel. What do you get for uname -r?
-Steve
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2011-12-20 19:02 ` Steve Grubb
@ 2011-12-21 12:17 ` Max Williams
2011-12-21 19:24 ` Steve Grubb
0 siblings, 1 reply; 12+ messages in thread
From: Max Williams @ 2011-12-21 12:17 UTC (permalink / raw)
To: linux-audit
Sorry, forgot to include that!
[root@host1 ~]# uname -r
2.6.32-131.21.1.el6.x86_64
[root@host1 ~]# auditctl -s
AUDIT_STATUS: enabled=1 flag=0 pid=24173 rate_limit=0 backlog_limit=8192 lost=124822501 backlog=0
It's a RHEL6.1 server.
Cheers,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 20 December 2011 19:03
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Tuesday, December 20, 2011 12:55:49 PM Max Williams wrote:
> How come this event is not ignored due to the 8th rule? I think I'm
> missing something.
One piece of information is missing. The enforcement of the audit policy is done by the kernel. What do you get for uname -r?
-Steve
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Path ignored but syscall event still logged
2011-12-21 12:17 ` Max Williams
@ 2011-12-21 19:24 ` Steve Grubb
2012-01-06 17:26 ` Max Williams
0 siblings, 1 reply; 12+ messages in thread
From: Steve Grubb @ 2011-12-21 19:24 UTC (permalink / raw)
To: linux-audit
On Wednesday, December 21, 2011 07:17:01 AM Max Williams wrote:
> Sorry, forgot to include that!
>
> [root@host1 ~]# uname -r
> 2.6.32-131.21.1.el6.x86_64
> [root@host1 ~]# auditctl -s
> AUDIT_STATUS: enabled=1 flag=0 pid=24173 rate_limit=0 backlog_limit=8192
> lost=124822501 backlog=0
Initial assessment, the kernel patch that discards events might only work on
open(2). Eric is looking to see if this can be safely broadened.
-Steve
> On Tuesday, December 20, 2011 12:55:49 PM Max Williams wrote:
> > How come this event is not ignored due to the 8th rule? I think I'm
> > missing something.
>
> One piece of information is missing. The enforcement of the audit policy is
> done by the kernel. What do you get for uname -r?
>
> -Steve
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2011-12-21 19:24 ` Steve Grubb
@ 2012-01-06 17:26 ` Max Williams
2012-01-12 14:45 ` Max Williams
0 siblings, 1 reply; 12+ messages in thread
From: Max Williams @ 2012-01-06 17:26 UTC (permalink / raw)
To: linux-audit
Any update on this Steve? The other ignore rules seem to work, just not that one.
Thanks,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 21 December 2011 19:25
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Wednesday, December 21, 2011 07:17:01 AM Max Williams wrote:
> Sorry, forgot to include that!
>
> [root@host1 ~]# uname -r
> 2.6.32-131.21.1.el6.x86_64
> [root@host1 ~]# auditctl -s
> AUDIT_STATUS: enabled=1 flag=0 pid=24173 rate_limit=0
> backlog_limit=8192
> lost=124822501 backlog=0
Initial assessment, the kernel patch that discards events might only work on open(2). Eric is looking to see if this can be safely broadened.
-Steve
> On Tuesday, December 20, 2011 12:55:49 PM Max Williams wrote:
> > How come this event is not ignored due to the 8th rule? I think I'm
> > missing something.
>
> One piece of information is missing. The enforcement of the audit
> policy is done by the kernel. What do you get for uname -r?
>
> -Steve
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2012-01-06 17:26 ` Max Williams
@ 2012-01-12 14:45 ` Max Williams
2012-01-12 15:04 ` Steve Grubb
2012-01-13 14:45 ` Steve Grubb
0 siblings, 2 replies; 12+ messages in thread
From: Max Williams @ 2012-01-12 14:45 UTC (permalink / raw)
To: linux-audit
Hi All,
Sorry to bug you but is this issue I'm having a bug or have I made a mistake in the rules? Is there another way I could exclude this directory from auditd?
We have licenses for these servers so I could open a case if need be.
Many thanks,
Max
-----Original Message-----
From: linux-audit-bounces@redhat.com [mailto:linux-audit-bounces@redhat.com] On Behalf Of Max Williams
Sent: 06 January 2012 17:26
To: linux-audit@redhat.com
Subject: RE: Path ignored but syscall event still logged
Any update on this Steve? The other ignore rules seem to work, just not that one.
Thanks,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 21 December 2011 19:25
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Wednesday, December 21, 2011 07:17:01 AM Max Williams wrote:
> Sorry, forgot to include that!
>
> [root@host1 ~]# uname -r
> 2.6.32-131.21.1.el6.x86_64
> [root@host1 ~]# auditctl -s
> AUDIT_STATUS: enabled=1 flag=0 pid=24173 rate_limit=0
> backlog_limit=8192
> lost=124822501 backlog=0
Initial assessment, the kernel patch that discards events might only work on open(2). Eric is looking to see if this can be safely broadened.
-Steve
> On Tuesday, December 20, 2011 12:55:49 PM Max Williams wrote:
> > How come this event is not ignored due to the 8th rule? I think I'm
> > missing something.
>
> One piece of information is missing. The enforcement of the audit
> policy is done by the kernel. What do you get for uname -r?
>
> -Steve
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
--
Linux-audit mailing list
Linux-audit@redhat.com
https://www.redhat.com/mailman/listinfo/linux-audit
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Path ignored but syscall event still logged
2012-01-12 14:45 ` Max Williams
@ 2012-01-12 15:04 ` Steve Grubb
2012-01-12 15:07 ` Max Williams
2012-01-13 14:45 ` Steve Grubb
1 sibling, 1 reply; 12+ messages in thread
From: Steve Grubb @ 2012-01-12 15:04 UTC (permalink / raw)
To: linux-audit
On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> Sorry to bug you but is this issue I'm having a bug or have I made a
> mistake in the rules? Is there another way I could exclude this directory
> from auditd? We have licenses for these servers so I could open a case if
> need be.
The preliminary investigation was its a kernel bug. It needs to be checked in
more detail to see what the fix is.
-Steve
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2012-01-12 15:04 ` Steve Grubb
@ 2012-01-12 15:07 ` Max Williams
0 siblings, 0 replies; 12+ messages in thread
From: Max Williams @ 2012-01-12 15:07 UTC (permalink / raw)
To: linux-audit
OK, thanks for clarifying Steve. I'll open a support case with RH.
Cheers,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 12 January 2012 15:04
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> Sorry to bug you but is this issue I'm having a bug or have I made a
> mistake in the rules? Is there another way I could exclude this
> directory from auditd? We have licenses for these servers so I could
> open a case if need be.
The preliminary investigation was its a kernel bug. It needs to be checked in more detail to see what the fix is.
-Steve
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Path ignored but syscall event still logged
2012-01-12 14:45 ` Max Williams
2012-01-12 15:04 ` Steve Grubb
@ 2012-01-13 14:45 ` Steve Grubb
2012-01-13 16:46 ` Max Williams
1 sibling, 1 reply; 12+ messages in thread
From: Steve Grubb @ 2012-01-13 14:45 UTC (permalink / raw)
To: linux-audit
On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> Sorry to bug you but is this issue I'm having a bug or have I made a
> mistake in the rules? Is there another way I could exclude this directory
> from auditd?
Looking back at the original...
/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-
serial/1568280a-4eef7e3f-3873
Are there any mount points in that path? Or any symlinks pointing to other disk
devices?
Thanks,
-Steve
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2012-01-13 14:45 ` Steve Grubb
@ 2012-01-13 16:46 ` Max Williams
2012-01-13 18:51 ` Steve Grubb
0 siblings, 1 reply; 12+ messages in thread
From: Max Williams @ 2012-01-13 16:46 UTC (permalink / raw)
To: linux-audit
Hi Steve,
Thanks for the reply. Yes and yes:
[root@host1 ~]# mount|grep ab
/dev/mapper/VolGroupCF00-abf_graph on /naab2 type ext4 (rw)
/dev/mapper/VolGroupCF01-abf_icff on /naab1 type ext4 (rw)
[root@host1 ~]# ll /|grep ab
lrwxrwxrwx 1 root root 6 May 9 2011 ab1 -> /naab1
lrwxrwxrwx 1 root root 6 May 9 2011 ab2 -> /naab2
drwxrwx--- 5 root ab_users 4096 May 20 2011 naab1
drwxrwx--- 6 root ab_users 4096 Jun 29 2011 naab2
[root@host1 ~]#
How does that affect the the rule, which was for the actual mount point, not the sym link?
LIST_RULES: exit,never dir=/naab1 (0x6) syscall=all
Cheers,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 13 January 2012 14:46
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> Sorry to bug you but is this issue I'm having a bug or have I made a
> mistake in the rules? Is there another way I could exclude this
> directory from auditd?
Looking back at the original...
/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-
serial/1568280a-4eef7e3f-3873
Are there any mount points in that path? Or any symlinks pointing to other disk devices?
Thanks,
-Steve
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Path ignored but syscall event still logged
2012-01-13 16:46 ` Max Williams
@ 2012-01-13 18:51 ` Steve Grubb
2012-01-16 11:13 ` Max Williams
0 siblings, 1 reply; 12+ messages in thread
From: Steve Grubb @ 2012-01-13 18:51 UTC (permalink / raw)
To: linux-audit
On Friday, January 13, 2012 11:46:58 AM Max Williams wrote:
> Hi Steve,
> Thanks for the reply. Yes and yes:
>
> [root@host1 ~]# mount|grep ab
> /dev/mapper/VolGroupCF00-abf_graph on /naab2 type ext4 (rw)
> /dev/mapper/VolGroupCF01-abf_icff on /naab1 type ext4 (rw)
>
> [root@host1 ~]# ll /|grep ab
> lrwxrwxrwx 1 root root 6 May 9 2011 ab1 -> /naab1
> lrwxrwxrwx 1 root root 6 May 9 2011 ab2 -> /naab2
> drwxrwx--- 5 root ab_users 4096 May 20 2011 naab1
> drwxrwx--- 6 root ab_users 4096 Jun 29 2011 naab2
> [root@host1 ~]#
>
> How does that affect the the rule, which was for the actual mount point,
> not the sym link? LIST_RULES: exit,never dir=/naab1 (0x6) syscall=all
Its OK for the top level dir to be a mount point. However, what about
everything under it?
/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-serial/1568280a-4eef7e3f-3873
Could data or dir1 be a mount point? If anything under /naab1 is
a mount point, then you have to tell the kernel to treat it as equivalent
to the parent dir that you have the rule on. For example, suppose data
was in fact a moint point and you mounted /dev/sda1 onto it. You
would need to add the follwoing to your audit rules:
-q /naab1/serial/data,/dev/sda1
As for symlinks, I'm not sure that a recursive watch will follow the
symlink. If for example, some-app was a symlink to /opt/some-app,
I am pretty sure the watch will not follow over to the other device.
You would have to add a watch on /opt/some-app to get events.
The same thing applies for suppressing events.
-Steve
> -----Original Message-----
> From: Steve Grubb [mailto:sgrubb@redhat.com]
> Sent: 13 January 2012 14:46
> To: linux-audit@redhat.com
> Cc: Max Williams
> Subject: Re: Path ignored but syscall event still logged
>
> On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> > Sorry to bug you but is this issue I'm having a bug or have I made a
> > mistake in the rules? Is there another way I could exclude this
> > directory from auditd?
>
> Looking back at the original...
>
> /naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-
> serial/1568280a-4eef7e3f-3873
>
> Are there any mount points in that path? Or any symlinks pointing to other
> disk devices?
>
> Thanks,
> -Steve
>
> ________________________________________________________________________
> In order to protect our email recipients, Betfair Group use SkyScan from
> MessageLabs to scan all Incoming and Outgoing mail for viruses.
>
> ________________________________________________________________________
>
> --
> Linux-audit mailing list
> Linux-audit@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-audit
^ permalink raw reply [flat|nested] 12+ messages in thread
* RE: Path ignored but syscall event still logged
2012-01-13 18:51 ` Steve Grubb
@ 2012-01-16 11:13 ` Max Williams
0 siblings, 0 replies; 12+ messages in thread
From: Max Williams @ 2012-01-16 11:13 UTC (permalink / raw)
To: linux-audit
[-- Attachment #1.1: Type: text/plain, Size: 8224 bytes --]
Hi Steve,
There are no mount points anywhere in that path apart from at the top level. I'm 99% sure there were no sym links either but that path has since been removed so I can't be completely sure.
To make things a bit simpler I can reproduce it with a much shorter path and definitely no sym links within the path:
[root@hostb001 ~]# auditctl -l
LIST_RULES: exit,always dir=/etc/audit (0xa) perm=wa key=auditd_configuration
LIST_RULES: exit,always dir=/etc/audisp (0xb) perm=wa key=auditd_configuration
LIST_RULES: exit,always watch=/etc/libaudit.conf perm=wa key=auditd_configuration
LIST_RULES: exit,always watch=/etc/sysconfig/auditd perm=wa key=auditd_configuration
LIST_RULES: exit,never dir=/etc/lvm/cache (0xe) syscall=all
LIST_RULES: exit,never dir=/opt (0x4) syscall=all
LIST_RULES: exit,never dir=/tmp (0x4) syscall=all
LIST_RULES: exit,never dir=/naab1 (0x6) syscall=all
LIST_RULES: exit,never dir=/naab2 (0x6) syscall=all
LIST_RULES: exit,never dir=/ab1 (0x4) syscall=all
LIST_RULES: exit,never dir=/ab2 (0x4) syscall=all
LIST_RULES: exit,never dir=/usr/openv/netbackup (0x14) syscall=all
LIST_RULES: exit,always perm=a key=file_attributes
LIST_RULES: exit,always arch=3221225534 (0xc000003e) a1=1074292226 (0x40086602) key=file_attributes syscall=ioctl
LIST_RULES: exit,always arch=3221225534 (0xc000003e) a1=-2146933247 (0x80086601) key=file_attributes syscall=ioctl
LIST_RULES: exit,always arch=3221225534 (0xc000003e) exit=-13 (0xfffffff3) key=invalid_logical_access syscall=open
LIST_RULES: exit,always dir=/bin (0x4) perm=wa key=bin_modification
LIST_RULES: exit,always dir=/boot (0x5) perm=wa key=boot_modification
LIST_RULES: exit,always dir=/etc (0x4) perm=wa key=etc_modification
LIST_RULES: exit,always dir=/home (0x5) perm=wa key=home_modification
LIST_RULES: exit,always dir=/lib (0x4) perm=wa key=lib_modification
LIST_RULES: exit,always dir=/lib64 (0x6) perm=wa key=lib64_modification
LIST_RULES: exit,always dir=/root (0x5) perm=wa key=root_modification
LIST_RULES: exit,always dir=/sbin (0x5) perm=wa key=sbin_modification
LIST_RULES: exit,always dir=/usr (0x4) perm=wa key=usr_modification
LIST_RULES: exit,always dir=/var/spool/at (0xd) perm=wa key=misc_var
LIST_RULES: exit,always dir=/var/spool/cron (0xf) perm=wa key=misc_var
LIST_RULES: exit,never dir=/var (0x4) syscall=all
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=dir_operations syscall=mkdir,rmdir,unlinkat
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=link_operation syscall=rename,link,unlink,symlink
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=special_device_creation syscall=mknod,mknodat
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=mount_operation syscall=mount,umount2
LIST_RULES: exit,always arch=3221225534 (0xc000003e) key=kernel_module syscall=create_module,init_module,delete_module
LIST_RULES: exclude,always msgtype=CRED_ACQ (0x44f)
LIST_RULES: exclude,always msgtype=CRED_DISP (0x450)
LIST_RULES: exclude,always msgtype=CRYPTO_KEY_USER (0x964)
LIST_RULES: exclude,always msgtype=CRYPTO_SESSION (0x967)
LIST_RULES: exclude,always msgtype=LOGIN (0x3ee)
LIST_RULES: exclude,always msgtype=USER_ACCT (0x44d)
LIST_RULES: exclude,always msgtype=USER_AUTH (0x44c)
LIST_RULES: exclude,always msgtype=USER_CMD (0x463)
LIST_RULES: exclude,always msgtype=USER_END (0x452)
LIST_RULES: exclude,always msgtype=USER_LOGIN (0x458)
LIST_RULES: exclude,always msgtype=USER_START (0x451)
[root@hostb001 ~]#
[root@hostb001 ~]# mount|grep naab1
/dev/mapper/VolGroupB01-abb_landing on /naab1 type ext4 (rw)
[root@hostb001 ~]#
[root@hostb001 ~]# ls -l /|grep naab1
lrwxrwxrwx 1 root root 6 Jun 6 2011 ab1 -> /naab1
drwxr-x--- 6 app app_users 4096 Aug 23 13:23 naab1
[root@hostb001 ~]#
[root@hostb001 ~]# touch /naab1/temp-file
[root@hostb001 ~]# chmod 600 /naab1/temp-file
[root@hostb001 ~]#
[root@hostb001 ~]# tail -3 /var/log/audit/audit.log
node=hostb001.domain type=SYSCALL msg=audit(1326711394.421:3737872): arch=c000003e syscall=268 success=yes exit=0 a0=ffffffffffffff9c a1=60d1d0 a2=180 a3=0 items=1 ppid=20688 pid=32510 auid=7382 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=49941 comm="chmod" exe="/bin/chmod" key="file_attributes"
node=hostb001.domain type=CWD msg=audit(1326711394.421:3737872): cwd="/root"
node=hostb001.domain type=PATH msg=audit(1326711394.421:3737872): item=0 name="/naab1/temp-file" inode=12 dev=fd:0d mode=0100600 ouid=0 ogid=0 rdev=00:00
[root@hostb001 ~]#
Does this make it a bit clearer? I look forward to your reply.
Many thanks,
Max
-----Original Message-----
From: Steve Grubb [mailto:sgrubb@redhat.com]
Sent: 13 January 2012 18:52
To: linux-audit@redhat.com
Cc: Max Williams
Subject: Re: Path ignored but syscall event still logged
On Friday, January 13, 2012 11:46:58 AM Max Williams wrote:
> Hi Steve,
> Thanks for the reply. Yes and yes:
>
> [root@host1 ~]# mount|grep ab
> /dev/mapper/VolGroupCF00-abf_graph on /naab2 type ext4 (rw)
> /dev/mapper/VolGroupCF01-abf_icff on /naab1 type ext4 (rw)
>
> [root@host1 ~]# ll /|grep ab
> lrwxrwxrwx 1 root root 6 May 9 2011 ab1 -> /naab1
> lrwxrwxrwx 1 root root 6 May 9 2011 ab2 -> /naab2
> drwxrwx--- 5 root ab_users 4096 May 20 2011 naab1
> drwxrwx--- 6 root ab_users 4096 Jun 29 2011 naab2
> [root@host1 ~]#
>
> How does that affect the the rule, which was for the actual mount
> point, not the sym link? LIST_RULES: exit,never dir=/naab1 (0x6)
> syscall=all
Its OK for the top level dir to be a mount point. However, what about everything under it?
/naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-serial/1568280a-4eef7e3f-3873
Could data or dir1 be a mount point? If anything under /naab1 is a mount point, then you have to tell the kernel to treat it as equivalent to the parent dir that you have the rule on. For example, suppose data was in fact a moint point and you mounted /dev/sda1 onto it. You would need to add the follwoing to your audit rules:
-q /naab1/serial/data,/dev/sda1
As for symlinks, I'm not sure that a recursive watch will follow the symlink. If for example, some-app was a symlink to /opt/some-app, I am pretty sure the watch will not follow over to the other device.
You would have to add a watch on /opt/some-app to get events.
The same thing applies for suppressing events.
-Steve
> -----Original Message-----
> From: Steve Grubb [mailto:sgrubb@redhat.com]
> Sent: 13 January 2012 14:46
> To: linux-audit@redhat.com
> Cc: Max Williams
> Subject: Re: Path ignored but syscall event still logged
>
> On Thursday, January 12, 2012 09:45:59 AM Max Williams wrote:
> > Sorry to bug you but is this issue I'm having a bug or have I made a
> > mistake in the rules? Is there another way I could exclude this
> > directory from auditd?
>
> Looking back at the original...
>
> /naab1/serial/data/dir1/serial/dir2/abc_load/temp/some-app/.WORK-
> serial/1568280a-4eef7e3f-3873
>
> Are there any mount points in that path? Or any symlinks pointing to
> other disk devices?
>
> Thanks,
> -Steve
>
> ______________________________________________________________________
> __ In order to protect our email recipients, Betfair Group use SkyScan
> from MessageLabs to scan all Incoming and Outgoing mail for viruses.
>
> ______________________________________________________________________
> __
>
> --
> Linux-audit mailing list
> Linux-audit@redhat.com<mailto:Linux-audit@redhat.com>
> https://www.redhat.com/mailman/listinfo/linux-audit
________________________________________________________________________
In order to protect our email recipients, Betfair Group use SkyScan from
MessageLabs to scan all Incoming and Outgoing mail for viruses.
________________________________________________________________________
[-- Attachment #1.2: Type: text/html, Size: 16827 bytes --]
[-- Attachment #2: Type: text/plain, Size: 0 bytes --]
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2012-01-16 11:13 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-12-20 17:55 Path ignored but syscall event still logged Max Williams
2011-12-20 19:02 ` Steve Grubb
2011-12-21 12:17 ` Max Williams
2011-12-21 19:24 ` Steve Grubb
2012-01-06 17:26 ` Max Williams
2012-01-12 14:45 ` Max Williams
2012-01-12 15:04 ` Steve Grubb
2012-01-12 15:07 ` Max Williams
2012-01-13 14:45 ` Steve Grubb
2012-01-13 16:46 ` Max Williams
2012-01-13 18:51 ` Steve Grubb
2012-01-16 11:13 ` Max Williams
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.