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Description of problem:
Selinux policy denies audisp-remote (audispd plugin for remote logging) to write to its queue file /var/spool/audit/remote.log:
time->Tue Jan 16 10:10:10 2018
node=REMOTE_LOGGING_CLIENT type=PROCTITLE msg=audit(1516093810.889:5569629): proctitle="/sbin/audisp-remote"
node=REMOTE_LOGGING_CLIENT type=SYSCALL msg=audit(1516093810.889:5569629): arch=c000003e syscall=2 success=no exit=-13 a0=5571a4578bd5 a1=42 a2=180 a3=49 items=0 ppid=22611 pid=22634 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="audisp-remote" exe="/usr/sbin/audisp-remote" subj=system_u:system_r:audisp_remote_t:s15:c0.c1023 key=(null)
node=REMOTE_LOGGING_CLIENT type=AVC msg=audit(1516093810.889:5569629): avc: denied { write } for pid=22634 comm="audisp-remote" name="remote.log" dev="dm-4" ino=4230169 scontext=system_u:system_r:audisp_remote_t:s15:c0.c1023 tcontext=staff_u:object_r:audit_spool_t:s0 tclass=file
Tool audit2allow suggest to add the following rule:
allow audisp_remote_t audit_spool_t:file write;
Loading a module containing aforementioned rule resolves the issue. Without it, remote logging with forwarding does not work.
Version-Release number of selected component (if applicable):
audit-2.8.1-3.el7
kernel-3.10.0-823.el7
selinux-policy-3.13.1-183.el7
selinux-policy-mls-3.13.1-183.el7
How reproducible:
100%
Steps to Reproduce:
1. Setup audit-remote logging using client forwarding mode.
2. Start auditd.
Actual results:
From journalctl:
audisp-remote[22659]: Error initializing audit record queue: Permission denied
audisp-remote[22659]: Connected to A.B.C.D
And AVC mentioned in description.
Expected results:
audisp-remote[25338]: Audisp-remote started with queue_size: 1
audisp-remote[25338]: Connected to A.B.C.D
Additional info:
This problem was discovered on MLS system but it should be reproducible on a system with targeted policy.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2018:0763
Description of problem: Selinux policy denies audisp-remote (audispd plugin for remote logging) to write to its queue file /var/spool/audit/remote.log: time->Tue Jan 16 10:10:10 2018 node=REMOTE_LOGGING_CLIENT type=PROCTITLE msg=audit(1516093810.889:5569629): proctitle="/sbin/audisp-remote" node=REMOTE_LOGGING_CLIENT type=SYSCALL msg=audit(1516093810.889:5569629): arch=c000003e syscall=2 success=no exit=-13 a0=5571a4578bd5 a1=42 a2=180 a3=49 items=0 ppid=22611 pid=22634 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="audisp-remote" exe="/usr/sbin/audisp-remote" subj=system_u:system_r:audisp_remote_t:s15:c0.c1023 key=(null) node=REMOTE_LOGGING_CLIENT type=AVC msg=audit(1516093810.889:5569629): avc: denied { write } for pid=22634 comm="audisp-remote" name="remote.log" dev="dm-4" ino=4230169 scontext=system_u:system_r:audisp_remote_t:s15:c0.c1023 tcontext=staff_u:object_r:audit_spool_t:s0 tclass=file Tool audit2allow suggest to add the following rule: allow audisp_remote_t audit_spool_t:file write; Loading a module containing aforementioned rule resolves the issue. Without it, remote logging with forwarding does not work. Version-Release number of selected component (if applicable): audit-2.8.1-3.el7 kernel-3.10.0-823.el7 selinux-policy-3.13.1-183.el7 selinux-policy-mls-3.13.1-183.el7 How reproducible: 100% Steps to Reproduce: 1. Setup audit-remote logging using client forwarding mode. 2. Start auditd. Actual results: From journalctl: audisp-remote[22659]: Error initializing audit record queue: Permission denied audisp-remote[22659]: Connected to A.B.C.D And AVC mentioned in description. Expected results: audisp-remote[25338]: Audisp-remote started with queue_size: 1 audisp-remote[25338]: Connected to A.B.C.D Additional info: This problem was discovered on MLS system but it should be reproducible on a system with targeted policy.