SELinux (Security-Enhanced Linux) is an implementation of a flexible mandatory, role-based access control architecture on Linux. It is primarily used to confine system processes.

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Benchmarking under SELinux Sandbox with Phoronix Test Suite

I would like to run the Phoronix Test Suite 6.2.2 under the SELinux sandbox on Fedora 23, but I can't execute it using $ sandbox ./phoronix-test-suite. I probably don't have the correct SELinux type. ...
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Adding fcontext to unconfined application

This feels like the most horrid twist of fate ever... A user is having me setup tomEE (apache-tomee-jaxrs-1.7.4). This is on a RHEL6 machine. I've installed from the tarball available from apache's ...
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SELinux, ProFTPd and the silent log

I need a FTP server on my machine, a Fedora 23. I want a simple setup, and I decided for ProFTPd and authentication with mod_auth_unix.c (this is just about my machine). I installed ProFTPd and ...
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Defining a group of ports for SELinux

At my organization, we use a piece of software for instrumenting and monitoring our servers. Since this piece of software neither supports SELinux nor SystemD, we are currently working on improving ...
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25 views

SELinux, MySQL, and shared memory

On an SELinux enabled Oracle Linux 6 host, I have a product using MySQL as its underlying database and, through the database, is trying to access /dev/shm. /dev/shm mounts with context tmpfs_t, by ...
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How to isolate my browser?

I want to protect my data against a browser exploit, by forbidding Firefox to access any file beside : ~/.mozilla/ ~/Downloads/ I tried to create another user account with which I would run ...
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1answer
26 views

SELinux crashed data system

I wanted to change the type of some data for SELinux and I made a typo and sent the following command into the prompt as the root user: semanage fcontext -a -t openvpn _etc_t / Now my system ...
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46 views

chcon: can't apply partial context to unlabeled file '/usr/sbin/xrdp'

Sorry guys but I'm not a linux nerd (yet) and whenever I'm trying to execute this line to configure SELinux to install xrdp from this tutorial : ...
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SELinux httpd CentOS

I'm having trouble with SELinux and Apache DokuWiki on my CentOS 7 box. First I was unable to read the html directory contents. I disabled SELinux to test and a test index.html that I placed there ...
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what does policycoreutils-devel do with regards to SElinux in relation to rhcsa

I am studying for the RHCSA exam with multiple supporting materials along with an 'official' course. One of my supplemental materials references installing policycoreutils-devel with relation to the ...
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SELinux forbits ACPI/udev hook to use sudo

I have a ThinkPad X220 Tablet which has a twistable display. The thinkpad-scripts collection which I wrote with a friend hooks into the hardware event (as root) and then runs a script. This is the ...
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SELinux prevents auto-umount of ecryptfs

I'm running SELinux and ecryptfs on a Debian machine. When a user logs out, unfortunately it's home directory is not unmounted, and I get the following error in audit.log: type=USER_AVC ...
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15 views

Filebased SELinux booleans

I'm trying to get numba running on my Debian server in SELinux enforcing mode. Numba is build on LLVMs jit compiler. The problem is, LLVM insists on having memory, which is writeable and executable at ...
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32 views

Share host directory between multiple containers vs. SELinux

Sharing a host directory with a docker container usually is easy enough: $ docker create -v /path/to/hostdir:/path/inside/container --name conta ... Things get more complicated, if SELinux is ...
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21 views

Selinux inode security struct allocation

i'm trying to understand allocation of inode_security_struct in Selinux. I looked for a source code of selinux and there is only one allocation of this struct on line 230 in hooks.c file. This ...
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1answer
83 views

SELinux + MergerFS (fuse) not working well together

I have been trying now for several days to get my new server up and running. I am running CentOS with MergerFS to pool my drives and samba to host to my windows machines. All of this running in ...
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77 views

Timeouts with authd on CentOS 7

I am currently trying to augment my mailsystem by allowing servers that received mails from me within the last ten seconds to perform ident lookups. While the needed iptables rules are working ...
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41 views

SELinux not allowing read files on ~/.cert

I'm new to Fedora 23 and SELinux. I use an OpenVPN client through NetworkManager. I stored all the files I needed OpenVPN to access (certificate, CA and private key) inside ~/.cert and ran updatecon ...
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230 views

Nvidia drivers not loading correctly on Fedora 23

I just installed the nvidia drivers on fedora 23 (kernels 4.2.3 and 4.3.5), and it worked fine for 1 or 2 restarts, but during my last few reboots, cinnamon has crashed and started in fallback mode ...
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28 views

selinux allow port 8332 porttype

selinux is blocking port 8332. Now I want to unlock it. But what porttype do I have to use for an rpc connection? This is the message I get: SELinux is preventing /usr/sbin/php-fpm from name_connect ...
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47 views

'syntax error' at token '' on line 6:

I'm quite new to Linux and I need to build a local policy SElinux module. I'm compiling with audit2allow from a file containing the following lines : module lockx11vnc 1.1; require { class ...
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Recreating local selinux contexts after OS Reinstallation

We have added a few specific contexts to our SELinux via the "semanage fcontext ..." command. The patterns are stored in /etc/selinux/targetd/contexts/files/file_contexts.local. Assuming that we ...
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apply proper security labels during filesystem restore

When restoring a filesystem on a separate system (i.e., possibly a different system than the one where the filesystem was originally mounted and in use), I would like to apply the correct security ...
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49 views

SELinux is not logging anywhere

I have SELinux in permissive mode enabled on CentOS7 system. But it doesn't seem to produce any logs. No new files in /var/log/audit, grep -i selinux /var/log/messages* finds nothing. sestatus ...
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103 views

Can using chcon to essentially bypass selinux be less secure than setting selinux to permissive?

I was wondering if it is possible to make a CentOS 7 server less secure by using chcon than it would be if SELinux were in Permissive mode. I am essentially trying to set up Phusion Passenger with ...
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48 views

User cron jobs are not being executed any more (perhaps SELinux)

I have the following output as a user running crontab -l: #Ansible: backup-external chaos */20 * * * * flock --nonblock /home/mu/.cache/backup-external.lock backup-external chaos */20 * * * * ...
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67 views

no iptables, no selinux, port 81 in virtualhost still not working

I try to open port 81 as a virtualhost. after setting apache, I can CURL localhost:81 from local machine and get response(yes it was listening port 81). However, when visit the same address from ...
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51 views

nginx server never resolves

I have set up an nginx server which is a proxy for port 80 to http://127.0.0.1:3000, but the request never gets through. It just infinitely loads. I have tried sudo /sbin/iptables -I INPUT -p tcp -m ...
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34 views

Cannot access server outside of server`

I have a node server listening on port 80. If I send a request to it like this: request('http://127.0.0.1:80',function(err,res,data) {console.log(data)}) It works. It returns what I would expect. ...
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83 views

Why does audit2why have nothing to do?

I know I have an issue with SElinux. So I am following a tutorial that will help me understand the nature of the file access problems I am having. That was I can still have SElinux enforce as supposed ...
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53 views

Wrong role and type on login

I'm on an Ubuntu 14.04 derivative, elementary OS Freya. I have installed and configured SELinux using the selinux-policy-default package, which contains a lot of modules. I've also added my user to ...
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120 views

Suitable permissions for owncloud /data directory using nginx under centos

Having the following software: nginx web server centos 7.1 OS owncloud 8 Application https Web Browsing Protocol PHP-FPM After resolving the issue of /config directory permissions, we reached ...
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SELinux error while installing Awesome WM packages

After installing Awesome wm packages: awesome.x86_64 rancid.x86_64 vicious.noarch I'm getting an error in SELinux Troubleshooter: The source process: useradd Attempted this access: create ...
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28 views

Do I need to create a module for a new program or just use an existing one?

We have been developing a program at work to be run on a CentOS image. This program is very critical for us, so we need it to run in a very secure context. So, I was thinking of using SELinux to ...
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62 views

Unable to emerge SystemD on Hardened/SELinux

I'm on the hardened/linux/amd64/selinux profile on a recent Stage 3 of Gentoo amd64. I'm trying to install SystemD, and I see the following: > emerge -aq sys-apps/ The following mask changes are ...
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Where does samba_share_t come from

I have samba installed, selinux in enforcing mode, samba shares works fine. But I am not sure where samba_share_t is defined? semanage fcontext -l | grep samba_share_t does not return anything. ...
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49 views

crontab and selinux

I have Drupal 7 on RHEL 7 and it looks like SELinux blocks crontab. aureport -a showes 90. 11/27/2015 01:32:35 httpd system_u:system_r:httpd_t:s0 87 file unlink system_u:object_r:httpd_log_t:s0 ...
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What are SELinux “.lst” files under /usr/share/selinux/targeted on CentOS 7?

I can see several ".lst" file under /usr/share/selinux/targeted on CentOS 7: base.lst modules-base.lst modules-contrib.lst nonbasemodules.lst ".lst" files contain a list of SELinux policy ...
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109 views

HOWTO: Fix “Cannot parse sensitivity level in s0” error when attempting to start a KVM VM after a major OS upgrade

I have a Lenovo ThinkPad T430 running Red Hat Enterprise Linux 6.7 with kernel 2.6.32-573.8.1.el6.x86_64. This is a work computer and my corporate policy states that I must keep my operating system up ...
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45 views

Benchmarking With SELinux

I've been performing some benchmarking tasks on freshly installed CentOS machines with SELinux enabled and disabled. The tasks include copying files of various sizes, sending variable amounts of data ...
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Need help deciphering a particular SELinux/AVC error

As a SELinux newbie this avc error ( as generated by ausearch ) has me confused. time->Fri Nov 13 16:04:49 2015 type=PROCTITLE msg=audit(1447452289.136:242): proctitle="/opt/firefox/firefox" ...
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164 views

why isn't .htaccess redirecting requests on CentOS 7?

A web app running on CentOS 7 with Apache 2.4 recently changed its domain name from olddomain.com to newdomain.com. The structure of the app at the newdomain.com is different than on the ...
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1answer
241 views

how to remove SELinux label?

I added the SELinux label svirt_sandbox_file_t to /home chcon -Rt svirt_sandbox_file_t /home The label is shown using: [user@localhost ~]$ ls -Z unconfined_u:object_r:svirt_sandbox_file_t:s0 ...
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How to create an SELinux exception for individual files

I use a monitoring tool and on one of my systems that is checked remotely, it calls up a script, which in turn runs systemctl to check the status of a service. This was not working until I put SELinux ...
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RHEL / SELinux - Apache unable to write to a directory it can write to [duplicate]

I have a RHEL 7 machine running an Apache web server with multiple virtual hosts on it. I've recently run into an issue where I am unable to upload media, e.g. images / pictures / video, to my machine ...
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How to change service type of well defined ports in SElinux (centOS 6.5)

I need to be able to run SSH on port 23 instead of 22 on CentOS 6.5. SElinux won't allow that, as it has it as tcp/23 defined in policy. Any steps on how can I go about changing service type from ...
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1answer
218 views

SELinux and chroot system call

TL; DR: This is a question about the final step, in a portable, developer-oriented rooting process, that works across all Android machines. It is not based on any exploit - it is something that we are ...
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1answer
318 views

Listing and editing the content of /sepolicy

I am in a position to create my own boot image for my Android tablet - which means I can in theory modify the /sepolicy file to, for example, give the shell account that is used by adb shell sessions, ...
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98 views

Relocation in a docker volume: svirt_sandbox_file_t and texrel_shlib_t

I run a Docker container with a volume that contains a executable and shared library which requires relocation. I get: error while loading shared libraries: /opt/J9/bin/libj9thr24.so: cannot restore ...
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SELinux policy for ifplugd and udev in Raspbian

I've recently enabled SELinux on my RaspberryPi and recieved some AVCs denials. I'm reading SEL documentation and have resolved a few of them. But I'm not sure if I did it right. So please review my ...