[CentOS] OpenSSH-5.3p1 selinux problem on CentOS-5.4.
James B. Byrne
byrnejb at harte-lyne.ca
Thu Feb 4 17:42:44 UTC 2010
On Thu, February 4, 2010 12:00, Ned Slider wrote:
>
>
> I was under the impression that sshd runs unconfined in the current
> CentOS?
>
> $ ps axZ | grep sshd
> system_u:system_r:unconfined_t:SystemLow-SystemHigh 2766 ? Ss 0:00
> /usr/sbin/sshd
>
> For example, you don't need to change the ssh_port in SELinux when
> running the sshd on an alternative port, I assume because sshd is
> running unconfined.
>
> Also, it makes little sense to me to run sshd in a confined domain
> as an ssh login will give the user a login (bash) shell, which also
> runs unconfined:
>
> $ ps axZ | grep bash
> user_u:system_r:unconfined_t 8504 pts/3 Ss 0:00 /bin/bash
> user_u:system_r:unconfined_t 16789 pts/4 Ss 0:00 /bin/bash
>
> Or maybe I totally misunderstand?
>
>
Interesting. The OpenSSH-5.3p1 sshd that I built without selinux
enabled runs in this domain:
# ps axZ | grep sshd
user_u:system_r:initrc_t 1981 ? Ss 0:00
/opt/sbin/sshd
Whereas the CentOS-5.4 OpenSSH sshd runs like this:
# ps axZ | grep ssh
system_u:system_r:unconfined_t:SystemLow-SystemHigh 2681 ? Ss 0:00
/usr/sbin/sshd
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