Summary: SELinux is preventing /usr/sbin/exim "search" access on nagios. Detailed Description: [exim has a permissive type (exim_t). This access was not denied.] SELinux denied access requested by exim. It is not expected that this access is required by exim 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: You can generate a local policy module to allow this access - see FAQ (http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug report. Additional Information: Source Context unconfined_u:system_r:exim_t:s0 Target Context system_u:object_r:nagios_spool_t:s0 Target Objects nagios [ dir ] Source exim Source Path /usr/sbin/exim Port <Unknown> Host (removed) Source RPM Packages exim-4.72-1.fc13 Target RPM Packages Policy RPM selinux-policy-3.7.19-73.fc13 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Plugin Name catchall Host Name (removed) Platform Linux (removed) 2.6.34.7-61.fc13.x86_64 #1 SMP Tue Oct 19 04:06:30 UTC 2010 x86_64 x86_64 Alert Count 2 First Seen Wed 01 Dec 2010 12:16:23 GMT Last Seen Wed 01 Dec 2010 12:16:23 GMT Local ID cad900b0-df67-4f8a-bc72-b2c112ab13fb Line Numbers Raw Audit Messages node=(removed) type=AVC msg=audit(1291205783.335:87091): avc: denied { search } for pid=31569 comm="exim" name="nagios" dev=dm-1 ino=395916 scontext=unconfined_u:system_r:exim_t:s0 tcontext=system_u:object_r:nagios_spool_t:s0 tclass=dir node=(removed) type=SYSCALL msg=audit(1291205783.335:87091): arch=c000003e syscall=2 success=yes exit=128 a0=7f76890d1428 a1=0 a2=1b6 a3=0 items=0 ppid=31568 pid=31569 auid=500 uid=483 gid=467 euid=483 suid=483 fsuid=483 egid=467 sgid=467 fsgid=467 tty=(none) ses=1 comm="exim" exe="/usr/sbin/exim" subj=unconfined_u:system_r:exim_t:s0 key=(null) Hash String generated from catchall,exim,exim_t,nagios_spool_t,dir,search audit2allow suggests: #============= exim_t ============== allow exim_t nagios_spool_t:dir search;
Fixed in selinux-policy-3.7.19-74.fc13
selinux-policy-3.7.19-74.fc13 has been submitted as an update for Fedora 13. https://admin.fedoraproject.org/updates/selinux-policy-3.7.19-74.fc13
I think this may actually be a Nagios problem. It seems that in its default config it sends mail to & from the "nagios" user, via the admin_email setting in nagios.cfg ("nagios@localhost" by default) - even though I'd set my e-mail in contacts.cfg as per the Fedora quickstart guide in the docs. Exim is barfing on trying to process the recipient: 2010-12-01 12:16:23 1PNlbj-0008D9-43 <= nagios.co.uk U=nagios P=local S=824 2010-12-01 12:16:23 1PNlbj-0008D9-43 == nagios@localhost R=userforward defer (-1): failed to open /var/spool/nagios/.forward: Permission denied (euid=483 egid=467) I worked around it by adding an alias for the nagios user in /etc/aliases, and suddenly got a flurry of mails generated by the default localhost.cfg! However, we should probably not be attempting to deliver to this user by default, as most people will not realise to read this a/c's mail - root would be a better choice. Either admin_email should be changed, or the install should add an alias to /etc/aliases, or /var/spool/nagios/.forward should exist with suitable contents (and be readable by the MTA).
Russell, please open a new bug with nagios.
selinux-policy-3.7.19-74.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update selinux-policy'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/selinux-policy-3.7.19-74.fc13
selinux-policy-3.7.19-74.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.