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Hi, I've got httpd running on CentOS-5 with all the latest update. I'm getting the following AVC denied messages from SElinux. Now I don't want to disable SElinux for the httpd daemon as this server will be available on the internet. 1. [root@alpha ~]# sealert -l 8c3ce37b-fbf3-459b-87d9-e4c4727276eb Summary SELinux is preventing /usr/sbin/httpd (httpd_t) "sys_nice" access to <Unknown> (httpd_t). Allowing Access Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for <Unknown>, restorecon -v <Unknown>. Raw Audit Messages avc: denied { sys_nice } for comm="httpd" egid=0 euid=0 exe="/usr/sbin/httpd" exit=0 fsgid=0 fsuid=0 gid=0 items=0 pid=2241 scontext=system_u:system_r:httpd_t:s0 sgid=0 subj=system_u:system_r:httpd_t:s0 suid=0 tclass=capability tcontext=system_u:system_r:httpd_t:s0 tty=(none) uid=0 2. [root@alpha ~]# sealert -l 87d837ba-bae0-4cbc-8a93-344e6dc67295 Summary SELinux is preventing the /bin/netstat from using potentially mislabeled files net (proc_net_t). Detailed Description SELinux has denied the /bin/netstat access to potentially mislabeled files net. This means that SELinux will not allow http to use these files. Many third party apps install html files in directories that SELinux policy can not predict. These directories have to be labeled with a file context which httpd can accesss. Allowing Access If you want to change the file context of net so that the httpd daemon can access it, you need to execute it using chcon -t httpd_sys_content_t.net. You can look at the httpd_selinux man page for additional information. Raw Audit Messages avc: denied { read } for comm="netstat" dev=proc egid=0 euid=0 exe="/bin/netstat" exit=-13 fsgid=0 fsuid=0 gid=0 items=0 name="net" pid=2255 scontext=system_u:system_r:httpd_t:s0 sgid=0 subj=system_u:system_r:httpd_t:s0 suid=0 tclass=dir tcontext=system_u:object_r:proc_net_t:s0 tty=(none) uid=0 3. [root@alpha ~]# sealert -l b6d8bb36-32f7-4b10-9c09-331c6298fede Summary SELinux is preventing /bin/netstat (httpd_t) "create" access to <Unknown> (httpd_t). Raw Audit Messages avc: denied { create } for comm="netstat" egid=0 euid=0 exe="/bin/netstat" exit=-13 fsgid=0 fsuid=0 gid=0 items=0 pid=2255 scontext=system_u:system_r:httpd_t:s0 sgid=0 subj=system_u:system_r:httpd_t:s0 suid=0 tclass=socket tcontext=system_u:system_r:httpd_t:s0 tty=(none) uid=0 The test server seems to be working OK, so are these messages I can safely ignore. Alternatively how can I get rid of them without disaling SElinux for the httpd server. Regards, Tony -- Tony Molloy. System Manager. Dept. of Comp. Sci. University of Limerick |
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