Fedora 8: SELinux doesn't allow to manually start sshd?

Markelov Andrey amarkelov at pluscom.ru
Sun Nov 11 19:42:27 UTC 2007


Hello!

My system:
Fedora 8, selinux-policy-3.0.8-44 in targeted mode.

I log in to the system as ordinary user and then do su -.
When I try to start sshd daemon in Fedora 8 by typing "service sshd start"
I receive "Permission denied" message and this entry in audit.log:

type=SELINUX_ERR msg=audit(1194792116.506:236): security_compute_sid:  invalid context unconfined_u:system_r:sshd_t:s0-s0:c0.c1023 for scontext=unconfined_u:system_r:initrc_t:s0 tcontext=system_u:object_r:sshd_exec_t:s0 tclass=process
type=SYSCALL msg=audit(1194792116.506:236): arch=40000003 syscall=11 success=yes exit=0 a0=8f58ab0 a1=8f58658 a2=8f451c0 a3=0 items=0 ppid=11059 pid=11068 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 comm="sshd" exe="/usr/sbin/sshd" subj=unconfined_u:system_r:sshd_t:s0-s0:c0.c1023 key=(null)

When I try to start sshd my id -Z is:
unconfined_u:system_r:unconfined_t

I have some questions:
1) How can I explain that SELINUX_ERR message and "subj=..." in SYSCALL message?
2) Is it normal situation? In RHEL5 the "su -; service sshd start" commands work fine.
3) How can I enable "service sshd start" in that situation?
____
Andrey Markelov
Plus Communications
Phone: +7(495)777-0-111 ext.533





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