Re: selinux, sendmail, and disable_ipv6

Lukas Vrabec <[email protected]> Wed, 21 Nov 2018 22:10:03 +0100
Newsgroups	gmane.linux.redhat.fedora.selinux
Organization	Red Hat, Inc.
Message-ID	<[email protected]>
Hi Mark,

I believe you'll find answer here:

https://danwalsh.livejournal.com/47118.html

Thanks,
Lukas.

On 11/21/18 7:18 PM, mark wrote:
> Hi, Lukas,
> 
> Lukas Vrabec wrote:
>>
>> Could you reproduce your issue and then attach output of:
>>
>> # ausearch -m AVC -m USER_AVC -ts today
>>
> Here's an abbreviated o/p, as in this happened at 11:08 today:
> time->Wed Nov 21 11:08:55 2018
> type=PROCTITLE msg=audit(1542816535.125:26908):
> proctitle=2F7573722F7362696E2F73656E646D61696C002D4643726F6E4461656D6F6E002D69002D6F6469002D6F656D002D6F69002D74002D6600726F6F74
> type=SYSCALL msg=audit(1542816535.125:26908): arch=c000003e syscall=2
> success=yes exit=3 a0=7f52d568d0b8 a1=80000 a2=1b6 a3=24 items=0
> ppid=54786 pid=55276 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=51
> sgid=51 fsgid=51 tty=(none) ses=935 comm="sendmail"
> exe="/usr/sbin/sendmail.sendmail"
> subj=system_u:system_r:system_mail_t:s0-s0:c0.c1023 key=(null)
> type=AVC msg=audit(1542816535.125:26908): avc:  denied  { open } for 
> pid=55276 comm="sendmail" path="/proc/sys/net/ipv6/conf/all/disable_ipv6"
> dev="proc" ino=25607
> scontext=system_u:system_r:system_mail_t:s0-s0:c0.c1023
> tcontext=system_u:object_r:sysctl_net_t:s0 tclass=file
> type=AVC msg=audit(1542816535.125:26908): avc:  denied  { read } for 
> pid=55276 comm="sendmail" name="disable_ipv6" dev="proc" ino=25607
> scontext=system_u:system_r:system_mail_t:s0-s0:c0.c1023
> tcontext=system_u:object_r:sysctl_net_t:s0 tclass=file
> ----
> time->Wed Nov 21 11:08:55 2018
> type=PROCTITLE msg=audit(1542816535.125:26909):
> proctitle=2F7573722F7362696E2F73656E646D61696C002D4643726F6E4461656D6F6E002D69002D6F6469002D6F656D002D6F69002D74002D6600726F6F74
> type=SYSCALL msg=audit(1542816535.125:26909): arch=c000003e syscall=5
> success=yes exit=0 a0=3 a1=7fff06a576c0 a2=7fff06a576c0 a3=0 items=0
> ppid=54786 pid=55276 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=51
> sgid=51 fsgid=51 tty=(none) ses=935 comm="sendmail"
> exe="/usr/sbin/sendmail.sendmail"
> subj=system_u:system_r:system_mail_t:s0-s0:c0.c1023 key=(null)
> type=AVC msg=audit(1542816535.125:26909): avc:  denied  { getattr } for 
> pid=55276 comm="sendmail" path="/proc/sys/net/ipv6/conf/all/disable_ipv6"
> dev="proc" ino=25607
> scontext=system_u:system_r:system_mail_t:s0-s0:c0.c1023
> tcontext=system_u:object_r:sysctl_net_t:s0 tclass=file
> 
>      mark
> 


-- 
Lukas Vrabec
Software Engineer, Security Technologies
Red Hat, Inc.

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