Bug 782492 - Propose that you turn on PrivateTmp=true in service file for corosync
Propose that you turn on PrivateTmp=true in service file for corosync
Status: CLOSED NOTABUG
Product: Fedora
Classification: Fedora
Component: corosync (Show other bugs)
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Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Steven Dake
Fedora Extras Quality Assurance
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Depends On:
Blocks: PrivateTmp
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Reported: 2012-01-17 10:32 EST by Daniel Walsh
Modified: 2016-04-26 15:19 EDT (History)
4 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-01-17 11:45:44 EST
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Description Daniel Walsh 2012-01-17 10:32:55 EST
I would like to propose using PrivateTmp for corosync, to make it more secure
and avoid users from being able to potentially effect it.

http://fedoraproject.org/wiki/Features/ServicesPrivateTmp
Comment 1 Steven Dake 2012-01-17 11:21:30 EST
Dan,

Corosync doesn't create/open/delete any files in /tmp or /var/tmp on Fedora.  The cman plugins may do this, so I've copied Fabio (cman maintainer), but we are removing cman in Fedora 17.  On Fedora, we use /var/lib/corosync and /dev/shm exclusively.  If you can show me evidence of the corosync process using /var/tmp we can consider this feature.  Searching the code base doesn't show any code using this directory and running through strace doesn't demonstrate access to these directories either.

Thanks
-steve
Comment 2 Daniel Walsh 2012-01-17 11:32:10 EST
Steve, all I did was search the SELinux policy for domains that used tmp, if corosync no longer uses /tmp then you can close this bug.

One other thing that could cause this would be bash redirection.

command << _EOF
STUFF
__EOF

Anyways if you don't think you use /tmp then close the bug.
Comment 3 Steven Dake 2012-01-17 11:45:44 EST
We did use /var/tmp at one time but changed to shm_open for more secure operation.

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