pxe boot, NFS, Text install problems, selinux won't let sshd run bash
Jerry Williams
jwilliam at xmission.com
Sat Jan 27 04:17:42 UTC 2007
>From text mode install after reboot doing first boot, Network configuration.
/usr/lib/python2.5/site-=packages/rhpl/Conf.py:275: DeprecationWarning:
raising a string exception is deprecated
Raise FileMIssing, self.filename + ' does not exist.'
[root at f7 ~]# grep -v ^Install install.log
warning: mailcap-2.1.23-1.fc6: Header V3 DSA signature: NOKEY, key ID
897da07a
warning: elinks-0.11.1-5.1: Header V3 DSA signature: NOKEY, key ID 4f2a6fd2
[root at f7 ~]# cat selinux_alert.txt
Summary
SELinux is preventing /usr/sbin/sshd (system_chkpwd_t) "entrypoint" to
/bin/bash (shell_exec_t).
Detailed Description
SELinux denied access requested by /usr/sbin/sshd. It is not expected
that
this access is required by /usr/sbin/sshd and this access may signal an
intrusion attempt. It is also possible that the specific version or
configuration of the application is causing it to require additional
access.
Allowing Access
Sometimes labeling problems can cause SELinux denials. You could try to
restore the default system file context for /bin/bash, restorecon -v
/bin/bash If this does not work, there is currently no automatic way to
allow this access. Instead, you can generate a local policy module to
allow
this access - see
http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385
Or you can disable SELinux protection altogether. Disabling SELinux
protection is not recommended. Please file a
http://bugzilla.redhat.com/bugzilla/enter_bug.cgi against this package.
Additional Information
Source Context
root:system_r:system_chkpwd_t:SystemLow-SystemHigh
Target Context system_u:object_r:shell_exec_t
Target Objects /bin/bash [ file ]
Affected RPM Packages openssh-server-4.5p1-2.fc7
[application]bash-3.2-4.fc7 [target]
Policy RPM selinux-policy-2.5.1-5.fc7
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name plugins.catchall_file
Host Name f7.tinyfire.com
Platform Linux f7.tinyfire.com 2.6.19-1.2913.fc7 #1 SMP
Tue
Jan 23 17:55:44 EST 2007 i686 i686
Alert Count 2
Line Numbers
Raw Audit Messages
avc: denied { entrypoint } for comm="sshd" dev=dm-0 egid=0 euid=0
exe="/usr/sbin/sshd" exit=-13 fsgid=0 fsuid=0 gid=0 items=0 name="bash"
path="/bin/bash" pid=2694
scontext=root:system_r:system_chkpwd_t:s0-s0:c0.c1023
sgid=0 subj=system_u:system_r:sshd_t:s0-s0:c0.c1023 suid=0 tclass=file
tcontext=system_u:object_r:shell_exec_t:s0 tty=pts1 uid=0
Had to remove picture of the junk on the screen during the install.
Too big to post.
It happens at least 2 times during the install.
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