AVC from sendmail & rkhunter
Daniel J Walsh
dwalsh at redhat.com
Mon May 23 15:04:45 UTC 2011
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On 05/23/2011 04:27 PM, Steven Stern wrote:
> rkhunter is unhappy with my system (due to tomboy and /dev/shrm) but
> that's another story.
>
> When sendmail tries to notify me that rkhunter is unhappy, it generates
> and AVC:
>
> SELinux is preventing /usr/sbin/sendmail.sendmail from getattr access on
> the file /var/lib/rkhunter/rkhcronlog.bQnsKgU7Y1.
>
> ***** Plugin restorecon (99.5 confidence) suggests
> *************************
>
> If you want to fix the label.
> /var/lib/rkhunter/rkhcronlog.bQnsKgU7Y1 default label should be var_lib_t.
> Then you can run restorecon.
> Do
> # /sbin/restorecon -v /var/lib/rkhunter/rkhcronlog.bQnsKgU7Y1
>
> ***** Plugin catchall (1.49 confidence) suggests
> ***************************
>
> If you believe that sendmail.sendmail should be allowed getattr access
> on the rkhcronlog.bQnsKgU7Y1 file by default.
> Then you should report this as a bug.
> You can generate a local policy module to allow this access.
> Do
> allow this access for now by executing:
> # grep sendmail /var/log/audit/audit.log | audit2allow -M mypol
> # semodule -i mypol.pp
>
> Additional Information:
> Source Context system_u:system_r:system_mail_t:s0-s0:c0.c1023
> Target Context system_u:object_r:cron_var_lib_t:s0
> Target Objects /var/lib/rkhunter/rkhcronlog.bQnsKgU7Y1 [
> file ]
> Source sendmail
> Source Path /usr/sbin/sendmail.sendmail
> Port <Unknown>
> Host sds-desk.sterndata.com
> Source RPM Packages sendmail-8.14.4-20.fc15
> Target RPM Packages
> Policy RPM selinux-policy-3.9.16-23.fc15
> Selinux Enabled True
> Policy Type targeted
> Enforcing Mode Permissive
> Host Name sds-desk.sterndata.com
> Platform Linux sds-desk.sterndata.com
> 2.6.38.6-27.fc15.i686.PAE #1 SMP Sun May 15
> 17:39:47 UTC 2011 i686 i686
> Alert Count 1
> First Seen Mon 23 May 2011 03:38:43 AM CDT
> Last Seen Mon 23 May 2011 03:38:43 AM CDT
> Local ID 08c592fa-5221-4f06-ac8a-025279784a19
>
> Raw Audit Messages
> type=AVC msg=audit(1306139923.297:1080): avc: denied { getattr } for
> pid=954 comm="sendmail" path="/var/lib/rkhunter/rkhcronlog.bQnsKgU7Y1"
> dev=dm-0 ino=656217
> scontext=system_u:system_r:system_mail_t:s0-s0:c0.c1023
> tcontext=system_u:object_r:cron_var_lib_t:s0 tclass=file
>
>
> type=SYSCALL msg=audit(1306139923.297:1080): arch=i386 syscall=fstat64
> success=yes exit=0 a0=1 a1=bf802f50 a2=48cff4 a3=3 items=0 ppid=1
> pid=954 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=484 sgid=484
> fsgid=484 tty=(none) ses=122 comm=sendmail
> exe=/usr/sbin/sendmail.sendmail
> subj=system_u:system_r:system_mail_t:s0-s0:c0.c1023 key=(null)
>
> Hash: sendmail,system_mail_t,cron_var_lib_t,file,getattr
>
> audit2allow
>
> #============= system_mail_t ==============
> allow system_mail_t cron_var_lib_t:file getattr;
>
> audit2allow -R
>
> #============= system_mail_t ==============
> allow system_mail_t cron_var_lib_t:file getattr;
>
>
>
>
Please report as a bug.
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