Bug 2038955
| Summary: | FR cannot create a TCP socket (avc: denied { name_connect } for pid comm="radiusd" dest=1813 ) | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Filip Dvorak <fdvorak> |
| Component: | selinux-policy | Assignee: | Zdenek Pytela <zpytela> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 8.6 | CC: | lvrabec, mmalik, ssekidde |
| Target Milestone: | rc | Keywords: | AutoVerified, Triaged |
| Target Release: | 8.6 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.14.3-87.el8 | Doc Type: | No Doc Update |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-10 15:15:45 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: | |||
Caught in enforcing mode:
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type=PROCTITLE msg=audit(01/10/2022 11:23:13.050:338) : proctitle=/usr/sbin/radiusd -d /etc/raddb
type=SOCKADDR msg=audit(01/10/2022 11:23:13.050:338) : saddr={ saddr_fam=inet laddr=10.0.137.191 lport=1813 }
type=SYSCALL msg=audit(01/10/2022 11:23:13.050:338) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x8 a1=0x7f9294f4ca50 a2=0x10 a3=0x7f9294f4cad8 items=0 ppid=1 pid=21216 auid=unset uid=radiusd gid=radiusd euid=radiusd suid=radiusd fsuid=radiusd egid=radiusd sgid=radiusd fsgid=radiusd tty=(none) ses=unset comm=radiusd exe=/usr/sbin/radiusd subj=system_u:system_r:radiusd_t:s0 key=(null)
type=AVC msg=audit(01/10/2022 11:23:13.050:338) : avc: denied { name_connect } for pid=21216 comm=radiusd dest=1813 scontext=system_u:system_r:radiusd_t:s0 tcontext=system_u:object_r:radacct_port_t:s0 tclass=tcp_socket permissive=0
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Caught in permissive mode:
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type=PROCTITLE msg=audit(01/10/2022 11:25:34.687:353) : proctitle=/usr/sbin/radiusd -d /etc/raddb
type=SOCKADDR msg=audit(01/10/2022 11:25:34.687:353) : saddr={ saddr_fam=inet laddr=10.0.137.191 lport=1813 }
type=SYSCALL msg=audit(01/10/2022 11:25:34.687:353) : arch=x86_64 syscall=connect success=no exit=EHOSTUNREACH(No route to host) a0=0x8 a1=0x7f45c5905a50 a2=0x10 a3=0x7f45c5905ad8 items=0 ppid=1 pid=21307 auid=unset uid=radiusd gid=radiusd euid=radiusd suid=radiusd fsuid=radiusd egid=radiusd sgid=radiusd fsgid=radiusd tty=(none) ses=unset comm=radiusd exe=/usr/sbin/radiusd subj=system_u:system_r:radiusd_t:s0 key=(null)
type=AVC msg=audit(01/10/2022 11:25:34.687:353) : avc: denied { name_connect } for pid=21307 comm=radiusd dest=1813 scontext=system_u:system_r:radiusd_t:s0 tcontext=system_u:object_r:radacct_port_t:s0 tclass=tcp_socket permissive=1
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I've submitted a Fedora PR to address the issue: https://github.com/fedora-selinux/selinux-policy/pull/1002 To backport:
commit cb03984acddb7a126e2aa854b52db767b15760a0 (HEAD -> rawhide, upstream/rawhide)
Author: Zdenek Pytela <zpytela>
Date: Fri Jan 14 16:15:18 2022 +0100
Allow radiusd connect to the radacct port
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 (selinux-policy bug fix and enhancement update), 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-2022:1995 |
Description of problem: FR can forward auth or acct messages to the second FR server. It uses UDP protocol by default but in proxy.conf it is possible to configure to use TCP protocol between these servers. The problem is that the FR server cannot create a TCP connection because of selinux policy. Version-Release number of selected component (if applicable): RHEL-8.6.0-20220102.3 freeradius-3.0.20-12.module+el8.6.0+13617+542eca26.x86_64 selinux-policy-3.14.3-85.el8.noarch How reproducible: Steps to Reproduce: 1. dnf install freeradius freeradius-utils -y 2. configure home_server in /etc/raddb/proxy.conf realm NULL { } realm redhat.com { pool = pool_redhat.com nostrip } home_server redhat.com { type = auth+acct ipaddr = #(random ip_addr) port = 1812 secret = testing123 status_check = none proto = tcp } home_server_pool pool_redhat.com { type = fail-over home_server = redhat.com } 3. systemctl start radiusd 4. echo 'User-Name=localuser,Acct-Session-Id=60000061,Acct-Status-Type=Start,NAS-IP-Address=192.168.111.100,NAS-Port=0'| radclient -x localhost:1813 acct testing123 Actual results: radiusd log: ... Error: Failed opening new proxy socket 'proxy (0.0.0.0, 0) -> home_server ($ip_addr, 1813)' : Failed connecting socket: Permission denied ... AVC message: type=PROCTITLE msg=audit(1641828609.991:359): proctitle=2F7573722F7362696E2F72616469757364002D64002F6574632F7261646462 type=SYSCALL msg=audit(1641828609.991:359): arch=c000003e syscall=42 success=no exit=-13 a0=8 a1=7f71c6f22a50 a2=10 a3=7f71c6f22ad8 items=0 ppid=1 pid=21784 auid=4294967295 uid=95 gid=95 euid=95 suid=95 fsuid=95 egid=95 sgid=95 fsgid=95 tty=(none) ses=4294967295 comm="radiusd" exe="/usr/sbin/radiusd" subj=system_u:system_r:radiusd_t:s0 key=(null) type=AVC msg=audit(1641828609.991:359): avc: denied { name_connect } for pid=21784 comm="radiusd" dest=1813 scontext=system_u:system_r:radiusd_t:s0 tcontext=system_u:object_r:radacct_port_t:s0 tclass=tcp_socket permissive=0 Expected results: The FR should forward acct or auth messages to the home_server (ip_addr in a proxy.conf) via TCP Additional info: It is possible to use TCMS tests -> TCMS#597393 /CoreOS/freeradius/Multihost/copy-acct-to-home-server-sanity [freeradius:3.0 perl:5.26]