Bug 2156068
| Summary: | SELinux is preventing /usr/sbin/rsyslogd from 'search' accesses on the directory net | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | Lalit Dhiri <lalit_dhiri> |
| Component: | selinux-policy | Assignee: | Nikola Knazekova <nknazeko> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | low | Docs Contact: | |
| Priority: | medium | ||
| Version: | CentOS Stream | CC: | alakatos, bstinson, jwboyer, lvrabec, mmalik, mpitt, zpytela |
| Target Milestone: | rc | Keywords: | Regression, Triaged |
| Target Release: | --- | Flags: | pm-rhel:
mirror+
|
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | CockpitTest | ||
| Fixed In Version: | selinux-policy-38.1.4-1.el9 | Doc Type: | No Doc Update |
| Doc Text: |
If this bug requires documentation, please select an appropriate Doc Type value.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-05-09 08:17:04 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: | |||
We see this in Cockpit's RHEL 9.2 image refresh [1] as well, and can reproduce this fairly reliably in one of our tests. Curiously nothing in our tests touches or even cares about rsyslogd, this is just a random catch. The image build log [2] has the full list of package updates, but the most plausible ones are rsyslog (8.2102.0-105.el9 -> 8.2102.0-107.el9) selinux-policy (38.1.2-1.el9 -> 38.1.3-1.el9) So if rsyslog isn't supposed to do that, it may be prudent to reassign. CC'ing Attila, who uploaded that rsyslog version. [1] https://github.com/cockpit-project/bots/pull/4226 [2] https://cockpit-logs.us-east-1.linodeobjects.com/image-refresh-logs/rhel-9-2-20230102-062525.log commit 1340f95a0cc300743f1565aa3290ecabf4d4ade3
Author: Zdenek Pytela <zpytela>
Date: Wed Nov 23 09:20:51 2022 +0100
Allow syslogd read network sysctls
Addresses the following AVC denial:
type=AVC msg=audit(1669156432.404:191): avc: denied { read } for pid=700 comm="rsyslogd" name="disable_ipv6" dev="proc" ino=19523 scontext=system_u:system_r:syslogd_t:s0 tcontext=system_u:object_r:sysctl_net_t:s0 tclass=file permissive=0
Resolves: rhbz#2145019
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-2023:2483 |
Description of problem: SELinux is preventing /usr/sbin/rsyslogd from 'search' accesses on the directory net. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that rsyslogd should be allowed search access on the net directory 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: # ausearch -c 'rsyslogd' --raw | audit2allow -M my-rsyslogd # semodule -X 300 -i my-rsyslogd.pp Additional Information: Source Context system_u:system_r:syslogd_t:s0 Target Context system_u:object_r:sysctl_net_t:s0 Target Objects net [ dir ] Source rsyslogd Source Path /usr/sbin/rsyslogd Port <Unknown> Host (removed) Source RPM Packages rsyslog-8.2102.0-106.el9.x86_64 Target RPM Packages SELinux Policy RPM selinux-policy-targeted-38.1.3-1.el9.noarch Local Policy RPM selinux-policy-targeted-38.1.3-1.el9.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 5.14.0-214.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Dec 15 01:34:46 UTC 2022 x86_64 x86_64 Alert Count 12 First Seen 2022-12-23 01:36:19 GMT Last Seen 2022-12-23 15:59:29 GMT Local ID b6d879d1-b334-4683-9edd-cda0b3af0412 Raw Audit Messages type=AVC msg=audit(1671811169.9:22): avc: denied { search } for pid=805 comm="rsyslogd" name="net" dev="proc" ino=15721 scontext=system_u:system_r:syslogd_t:s0 tcontext=system_u:object_r:sysctl_net_t:s0 tclass=dir permissive=0 type=SYSCALL msg=audit(1671811169.9:22): arch=x86_64 syscall=openat success=no exit=EACCES a0=ffffff9c a1=7fff7499b7b0 a2=80100 a3=0 items=0 ppid=1 pid=805 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=rsyslogd exe=/usr/sbin/rsyslogd subj=system_u:system_r:syslogd_t:s0 key=(null) Hash: rsyslogd,syslogd_t,sysctl_net_t,dir,search Version-Release number of selected component (if applicable): How reproducible: Starts occuring after login to CentOS Stream 9