SELinux is preventing /usr/sbin/asterisk from using the 'sys_module' capabilities. ***** Plugin sys_module (99.5 confidence) suggests ************************* If you do not believe that /usr/sbin/asterisk should be attempting to modify the kernel by loading a kernel module. Then a process might be attempting to hack into your system. Do contact your security administrator and report this issue. ***** Plugin catchall (1.49 confidence) suggests *************************** If you believe that asterisk should have the sys_module capability by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # grep asterisk /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:asterisk_t:s0 Target Context system_u:system_r:asterisk_t:s0 Target Objects Unknown [ capability ] Source asterisk Source Path /usr/sbin/asterisk Port <Unknown> Host (removed) Source RPM Packages asterisk-1.8.5.0-1.fc15.2 Target RPM Packages Policy RPM selinux-policy-3.9.16-38.fc15 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 2.6.40.4-5.fc15.x86_64 #1 SMP Tue Aug 30 14:38:32 UTC 2011 x86_64 x86_64 Alert Count 40 First Seen Sat 17 Sep 2011 09:03:07 AM CEST Last Seen Sat 17 Sep 2011 03:32:15 PM CEST Local ID 21b9579c-4254-4d42-8827-d681dbed11a2 Raw Audit Messages type=AVC msg=audit(1316266335.42:47): avc: denied { sys_module } for pid=1055 comm="asterisk" capability=16 scontext=system_u:system_r:asterisk_t:s0 tcontext=system_u:system_r:asterisk_t:s0 tclass=capability type=SYSCALL msg=audit(1316266335.42:47): arch=x86_64 syscall=ioctl success=no exit=ENODEV a0=4 a1=8927 a2=7fff1d616a80 a3=1 items=0 ppid=1050 pid=1055 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=asterisk exe=/usr/sbin/asterisk subj=system_u:system_r:asterisk_t:s0 key=(null) Hash: asterisk,asterisk_t,asterisk_t,capability,sys_module audit2allow #============= asterisk_t ============== allow asterisk_t self:capability sys_module; audit2allow -R #============= asterisk_t ============== allow asterisk_t self:capability sys_module;
We are just slowly dontauditing every domain that needs to talk to the network sys_module, which means we will never know if a domain actually requested a sys_module access.
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