Bug 2025925
| Summary: | Confined sysadm users cannot execute Pacemaker commands | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Renaud Métrich <rmetrich> |
| Component: | selinux-policy | Assignee: | Zdenek Pytela <zpytela> |
| Status: | CLOSED DUPLICATE | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.5 | CC: | lvrabec, mmalik, ssekidde |
| Target Milestone: | rc | Keywords: | Triaged |
| Target Release: | 8.6 | Flags: | pm-rhel:
mirror+
|
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | No Doc Update | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-12-21 18:35:14 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1778780 | ||
rhel8# rpm -q selinux-policy selinux-policy-3.14.3-85.el8.noarch rhel8# sesearch -A -s sysadm_t -t cluster_t -c unix_stream_socket -p connectto allow sysadm_t cluster_domain:unix_stream_socket connectto; *** This bug has been marked as a duplicate of bug 1965251 *** |
Description of problem: When a user is confined to *sysadm_u* and tries, after sudoing, to execute various Pacemaker commands, they fail or show nothing, e.g.: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- # id -Z sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 # pcs stonith status Error: unable to get cluster status from crm_mon crm_mon: Error: cluster is not available on this node # crm_mon Waiting until cluster is available on this node ... -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- The root cause is *sysadm_t* is not able to connect to the Unix socket hold by *cluster_t* (Pacemaker daemons): -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- type=PROCTITLE msg=audit(11/23/2021 13:09:29.151:4608) : proctitle=crm_mon type=SYSCALL msg=audit(11/23/2021 13:09:29.151:4608) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x3 a1=0x7ffea4eaef30 a2=0x6e a3=0x0 items=0 ppid=29071 pid=29110 auid=sysadm uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts3 ses=41 comm=crm_mon exe=/usr/sbin/crm_mon subj=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(11/23/2021 13:09:29.151:4608) : avc: denied { connectto } for pid=29110 comm=crm_mon path=pacemakerd scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:cluster_t:s0 tclass=unix_stream_socket permissive=0 -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- The fix is to let it connect to the socket: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- # cat local_pacemaker_sysadm.cil (allow sysadm_t cluster_t (unix_stream_socket (connectto))) -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- Version-Release number of selected component (if applicable): selinux-policy-3.14.3-80.el8.noarch How reproducible: Always