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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=DE-AT link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Yes, config/SELinux is in MLS mode. Currently running with my self compiled one.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I know that it is not possible to really stop such an admin, I want to make it more difficult to attack the system. It also shouldn’t be possible to change file contexts (from a special directory), but that would be the next step…<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Do you have any hints where to search for those rules (discussed before) or why do they get generated even if I comment out the rules in sysadm.te?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I commented out the following entries in sysadm.te<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>#optional_policy(`<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># secadm_role_change(sysadm_r)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>#')<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>#optional_policy(`<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># seutil_run_setfiles(sysadm_t, sysadm_r)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># seutil_run_runinit(sysadm_t, sysadm_r)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>#')<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>That are the most appropriate entries…<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thanks!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE style='color:windowtext;mso-fareast-language:DE-AT'>Von:</span></b><span lang=DE style='color:windowtext;mso-fareast-language:DE-AT'> Daniel J Walsh [mailto:dwalsh@redhat.com] <br><b>Gesendet:</b> Montag, 31. März 2014 20:19<br><b>An:</b> Philipp; selinux@lists.fedoraproject.org<br><b>Betreff:</b> Re: WG: Adoption to Ref-Policy sysadm_t<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Yes that separation is more used in MLS Mdde. <br><br>Is SELinux config files in MLS Mode.<br><br>But if you are trying to stop an evil admin, I believe you will not be able to get it done. Removing sysadm privs is kind of difficult and backwards. You really want to define what an admin can do, rather then can't.<span style='font-size:12.0pt;mso-fareast-language:DE-AT'><o:p></o:p></span></p><div><p class=MsoNormal>On 03/31/2014 11:04 AM, Philipp wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Already tried that, but then the user isn’t able to open e.g the /var/log/audit/audit.log. This is also mentioned in the sysadm_secadm.te file. </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>logging_manage_audit_log(sysadm_t)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>logging_manage_audit_config(sysadm_t)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>logging_run_auditctl(sysadm_t, sysadm_r)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>logging_stream_connect_syslog(sysadm_t)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>The user is still able to read/write SELinux config files…</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE style='color:windowtext;mso-fareast-language:DE-AT'>Von:</span></b><span lang=DE style='color:windowtext;mso-fareast-language:DE-AT'> Daniel J Walsh [<a href="mailto:dwalsh@redhat.com">mailto:dwalsh@redhat.com</a>] <br><b>Gesendet:</b> Montag, 31. März 2014 16:59<br><b>An:</b> Philipp; <a href="mailto:selinux@lists.fedoraproject.org">selinux@lists.fedoraproject.org</a><br><b>Betreff:</b> Re: Adoption to Ref-Policy sysadm_t</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Does disabling sysadm_secadm package give you the separation you need.<br><br>semodule -d sysadm_secadm<o:p></o:p></p><div><p class=MsoNormal>On 03/31/2014 09:22 AM, Philipp wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Hi all,<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I am trying to adopt the reference policy in a way that the sysadm_t domain isn’t able to open SELinux configuration files or run any related binaries like semange. My approach was to edit the sysadm.te file and uncomment the related lines in there. Thus far, I haven’t found the right entries:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I looked up with sesearch for the following lines:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>sesearch --all -s sysadm_t -t selinux_config_t |<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Output:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>allow sysadm_t non_security_file_type : file { ioctl read write create getattr setattr lock relabelfrom relabelto append unlink link rename open } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : dir { ioctl read write create getattr setattr lock relabelfrom relabelto unlink link rename add_name remove_name reparent search rmdir open } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : lnk_file { ioctl read write create getattr setattr lock relabelfrom relabelto append unlink link rename } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : chr_file { getattr relabelfrom relabelto } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : blk_file { getattr relabelfrom relabelto } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : sock_file { getattr relabelfrom relabelto } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t non_security_file_type : fifo_file { getattr relabelfrom relabelto } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t file_type : filesystem getattr ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_usertype file_type : filesystem getattr ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_t selinux_config_t : dir { getattr search open } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_usertype selinux_config_t : file { ioctl read getattr lock open } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_usertype selinux_config_t : dir { ioctl read getattr lock search open } ;<o:p></o:p></p><p class=MsoNormal> allow sysadm_usertype selinux_config_t : lnk_file { read getattr } ;<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I thought that there must be some entries corresponding the last few lines, but as already mentioned I haven’t found any in the rpmbuild/SOURCES/serefpolicy-3.7.19/policy/modules/roles/sysadm* files.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>What I am doing wrong or where do I have to change something?<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Thank you in advance!<o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt'><br><br><br></span><o:p></o:p></p><pre>--<o:p></o:p></pre><pre>selinux mailing list<o:p></o:p></pre><pre><a href="mailto:selinux@lists.fedoraproject.org">selinux@lists.fedoraproject.org</a><o:p></o:p></pre><pre><a href="https://admin.fedoraproject.org/mailman/listinfo/selinux">https://admin.fedoraproject.org/mailman/listinfo/selinux</a><o:p></o:p></pre></blockquote><p class=MsoNormal><span style='font-size:12.0pt'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:DE-AT'><br><br><br><o:p></o:p></span></p><pre>--<o:p></o:p></pre><pre>selinux mailing list<o:p></o:p></pre><pre><a href="mailto:selinux@lists.fedoraproject.org">selinux@lists.fedoraproject.org</a><o:p></o:p></pre><pre><a href="https://admin.fedoraproject.org/mailman/listinfo/selinux">https://admin.fedoraproject.org/mailman/listinfo/selinux</a><o:p></o:p></pre></blockquote><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:DE-AT'><o:p> </o:p></span></p></div></body></html>