On 07/12/2013 06:26 PM, Andy Ruch wrote:
Hello,
I'm implementing a custom policy based on ref policy for RHEL 6.3. I'm
receiving the AVC below when the system boots. Should I allow this? I
was able to find this related posting
(
https://bugzilla.redhat.com/show_bug.cgi?id=431562) but it was for an
old version of iptables. Maybe ebtables has the same type of bug?
type=PATH msg=audit(07/12/2013 13:15:40.172:185) : item=1 name=(null)
inode=4912 dev=08:02 mode=file,755 ouid=root ogid=root rdev=00:00
obj=system_u:object_r:ld_so_t:s0
type=PATH msg=audit(07/12/2013 13:15:40.172:185) : item=0
name=/sbin/modprobe inode=12835 dev=08:02 mode=file,755 ouid=root
ogid=root rdev=00:00 obj=system_u:object_r:insmod_exec_t:s0
type=CWD msg=audit(07/12/2013 13:15:40.172:185) : cwd=/
type=EXECVE msg=audit(07/12/2013 13:15:40.172:185) : argc=2
a0=/sbin/modprobe a1=ebtables
type=SYSCALL msg=audit(07/12/2013 13:15:40.172:185) : arch=x86_64
syscall=execve success=yes exit=0 a0=1078740 a1=7fffb5126460
a2=7fffb51266b0 a3=7fffb51261e0 items=2 ppid=2109 pid=2110 auid=unset
uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root
fsgid=root tty=(none) ses=unset comm=modprobe exe=/sbin/modprobe
subj=system_u:system_r:insmod_t:s0-s0:c0.c1023 key=modules
type=AVC msg=audit(07/12/2013 13:15:40.172:185) : avc: denied { read
write } for pid=2110 comm=modprobe path=socket:[16196] dev=sockfs
ino=16196 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023
tcontext=system_u:system_r:iptables_t:s0-s0:c0.c1023 tclass=rawip_socket
Thanks,
Andy Ruch
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selinux(a)lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/selinux Yes, this is a leak.
Basically you can add dontaudit rules.
require{
type iptables_t;
type insmod_t;
}
dontaudit insmod_t iptables_t:rawip_socket { read write };
to your policy. We have dontaudit rules in Fedora.
Regards,
Miroslav