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Bug 593159

Summary:	AVC errors reported against tcpdump
Product:	Red Hat Enterprise Linux 6	Reporter:	Ian Kent <ikent>
Component:	selinux-policy	Assignee:	Miroslav Grepl <mgrepl>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Milos Malik <mmalik>
Severity:	medium	Docs Contact:
Priority:	low
Version:	6.0	CC:	dwalsh, ikent, jmoyer, mmalik, syeghiay
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	selinux-policy-3.7.19-32.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-11-10 21:34:26 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ian Kent 2010-05-18 02:15:09 UTC

Description of problem:

A couple of autofs RHTS regression tests are getting avc fails
due to tcpdump.

This has been happening for a while and doesn't appear to affect
the actual test outcome.

Is there something I should be doing to prevent these?

The messages I'm getting are:

/sbin/ausearch -sv no -m AVC -m USER_AVC -m SELINUX_ERR -ts 5/17/2010 19:3:1
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.216:163825): arch=40000003 syscall=102 success=no exit=-97 a0=1 a1=bfc66930 a2=9ceb88 a3=bfc66a7c items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.216:163825): avc:  denied  { module_request } for  pid=2458 comm="tcpdump" kmod="net-pf-31" scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=system
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163826): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163826): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon1" dev=devtmpfs ino=5120 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163827): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163827): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon2" dev=devtmpfs ino=5130 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163828): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163828): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon3" dev=devtmpfs ino=5138 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163829): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163829): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon4" dev=devtmpfs ino=5146 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163830): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163830): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon5" dev=devtmpfs ino=5154 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163831): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163831): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon6" dev=devtmpfs ino=5162 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163832): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163832): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon7" dev=devtmpfs ino=5170 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163833): arch=40000003 syscall=5 success=no exit=-13 a0=bfc657cc a1=8000 a2=0 a3=9dfd930 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163833): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="usbmon8" dev=devtmpfs ino=5178 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file
----
time->Mon May 17 19:03:29 2010
type=SYSCALL msg=audit(1274137409.217:163834): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137409.217:163834): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
----
time->Mon May 17 19:03:30 2010
type=SYSCALL msg=audit(1274137410.227:163836): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=72 gid=72 euid=72 suid=72 fsuid=72 egid=72 sgid=72 fsgid=72 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137410.227:163836): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
----
time->Mon May 17 19:03:31 2010
type=SYSCALL msg=audit(1274137411.228:163837): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=72 gid=72 euid=72 suid=72 fsuid=72 egid=72 sgid=72 fsgid=72 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137411.228:163837): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
----
time->Mon May 17 19:03:33 2010
type=SYSCALL msg=audit(1274137413.228:163839): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=72 gid=72 euid=72 suid=72 fsuid=72 egid=72 sgid=72 fsgid=72 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137413.228:163839): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
----
time->Mon May 17 19:03:34 2010
type=SYSCALL msg=audit(1274137414.228:163840): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=72 gid=72 euid=72 suid=72 fsuid=72 egid=72 sgid=72 fsgid=72 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137414.228:163840): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
----
time->Mon May 17 19:03:32 2010
type=SYSCALL msg=audit(1274137412.228:163838): arch=40000003 syscall=5 success=no exit=-13 a0=9b8335 a1=8000 a2=1b6 a3=9b8496 items=0 ppid=6737 pid=2458 auid=4294967295 uid=72 gid=72 euid=72 suid=72 fsuid=72 egid=72 sgid=72 fsgid=72 tty=(none) ses=4294967295 comm="tcpdump" exe="/usr/sbin/tcpdump" subj=system_u:system_r:netutils_t:s0 key=(null)
type=AVC msg=audit(1274137412.228:163838): avc:  denied  { read } for  pid=2458 comm="tcpdump" name="dev" dev=proc ino=4026531965 scontext=system_u:system_r:netutils_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file
/bin/grep avc: /tmp/dmesg.log | /bin/grep --invert-match granted
No AVC messages found in dmesg

Comment 2 RHEL Program Management 2010-06-07 16:08:31 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

Comment 3 Ian Kent 2010-06-10 06:41:53 UTC

Seems I assigned this to autofs by accident accident.
Please have a look at this.

Comment 4 Daniel Walsh 2010-06-10 12:43:32 UTC

Miroslav add



dev_read_usbmon_dev(netutils_t)
kernel_read_network_state(netutils_t)
kernel_request_load_module(netutils_t)

Comment 5 Miroslav Grepl 2010-06-16 11:26:14 UTC

Fixed in selinux-policy-3.7.19-25.el6.noarch

Comment 9 Daniel Walsh 2010-07-12 15:47:50 UTC

Miroslav add

dev_write_usbmon_dev(netutils_t)
dev_read_generic_usb_dev(netutils_t)
dev_write_generic_usb_dev(netutils_t)

########################################
## <summary>
##	Write USB monitor devices.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`dev_write_usbmon_dev',`
	gen_require(`
		type device_t, usbmon_device_t;
	')

	write_chr_files_pattern($1, device_t, usbmon_device_t)
')

Comment 10 Miroslav Grepl 2010-07-14 14:25:08 UTC

Fixed in selinux-policy-3.7.19-32.el6.noarch

Comment 12 releng-rhel@redhat.com 2010-11-10 21:34:26 UTC

Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.