Bug 1738246
| Summary: | SELinux prevents rhsmcertd-worker from opening the /var/log/hawkey.log file | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | John Sefler <jsefler> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED DUPLICATE | QA Contact: | BaseOS QE Security Team <qe-baseos-security> |
| Severity: | low | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.1 | CC: | csnyder, lvrabec, mmalik, plautrba, ssekidde, zpytela |
| Target Milestone: | rc | Keywords: | Triaged |
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-09-15 09:11:52 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: | 1716971 | ||
| Bug Blocks: | |||
This issue is already mentioned in following bugs: * https://bugzilla.redhat.com/show_bug.cgi?id=1716971 * https://bugzilla.redhat.com/show_bug.cgi?id=1720639 I believe the issue can be fixed by adding an appropriate file context pattern which matches /var/log/hawkey.log. Important question: Is rhsmcertd-worker supposed to only read the file? Or is the append / write access also needed? *** This bug has been marked as a duplicate of bug 1720639 *** |
Description of problem: The rhsmcertd-worker is causing the following AVC denial... type=AVC msg=audit(1565104291.260:4936): avc: denied { open } for pid=41389 comm="rhsmcertd-worke" path="/var/log/hawkey.log" dev="dm-0" ino=101246874 scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=file permissive=0 Version-Release number of selected component (if applicable): [root@qualcomm-amberwing-rep-20 ~]# rpm -q subscription-manager subscription-manager-1.25.13-1.el8.aarch64 [root@qualcomm-amberwing-rep-20 ~]# rpm -q selinux-policy selinux-policy-3.14.3-13.el8.noarch How reproducible: Steps to Reproduce: [root@qualcomm-amberwing-rep-20 ~]# systemctl stop rhsmcertd.service [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# subscription-manager config --rhsmcertd.splay=0 --logging=DEBUG [root@qualcomm-amberwing-rep-20 ~]# FOLLOWING INSTRUCTIONS FROM https://wiki.test.redhat.com/BaseOs/Security/SelinuxTestOnlyBugs#SELinuxHowToTestInstructions [root@qualcomm-amberwing-rep-20 ~]# service auditd restart Stopping logging: [ OK ] Redirecting start to /bin/systemctl start auditd.service [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# setenforce 1 [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# restorecon -Rv /etc /run /var Relabeled /etc/dnf/modules.d/satellite-5-client.module from system_u:object_r:root_t:s0 to system_u:object_r:etc_t:s0 Relabeled /run/fsck/sda.lock from system_u:object_r:fsadm_var_run_t:s0 to system_u:object_r:var_run_t:s0 [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# START_DATE_TIME=`date "+%m/%d/%Y %T"` [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# subscription-manager register --serverurl=subscription.rhsm.stage.redhat.com --username=stage_auto_testuser --servicelevel=Production --auto-attach Registering to: subscription.rhsm.stage.redhat.com:443/subscription Password: The system has been registered with ID: 474bdaa2-406d-4268-a1f2-5c08f451d53f The registered system name is: qualcomm-amberwing-rep-20.khw3.lab.eng.bos.redhat.com Service level set to: Production Installed Product Current Status: Product Name: Red Hat Enterprise Linux for ARM 64 High Touch Beta Status: Subscribed [root@qualcomm-amberwing-rep-20 ~]# systemctl start rhsmcertd.service [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# sleep 120 [root@qualcomm-amberwing-rep-20 ~]# [root@qualcomm-amberwing-rep-20 ~]# ausearch -m AVC -m USER_AVC -m SELINUX_ERR -i -ts ${START_DATE_TIME} ---- type=PROCTITLE msg=audit(08/06/2019 11:11:31.260:4936) : proctitle=/usr/libexec/platform-python /usr/libexec/rhsmcertd-worker type=SYSCALL msg=audit(08/06/2019 11:11:31.260:4936) : arch=aarch64 syscall=openat success=no exit=EACCES(Permission denied) a0=0xffffffffffffff9c a1=0xaaaae39c5a00 a2=O_WRONLY|O_CREAT|O_APPEND a3=0x1b6 items=0 ppid=41336 pid=41389 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=rhsmcertd-worke exe=/usr/libexec/platform-python3.6 subj=system_u:system_r:rhsmcertd_t:s0 key=(null) type=AVC msg=audit(08/06/2019 11:11:31.260:4936) : avc: denied { open } for pid=41389 comm=rhsmcertd-worke path=/var/log/hawkey.log dev="dm-0" ino=101246874 scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=file permissive=0 [root@qualcomm-amberwing-rep-20 ~]# Actual results: shown above Once the rhsmcertd.service triggers the rhsmcertd-worker to run, AVC denials are logged to /var/log/audit/audit.log Expected results: no AVC denials from "rhsmcertd-worke"r Additional info: [root@qualcomm-amberwing-rep-20 ~]# tail -f /var/log/audit/audit.log | grep denied type=AVC msg=audit(1565104291.260:4936): avc: denied { open } for pid=41389 comm="rhsmcertd-worke" path="/var/log/hawkey.log" dev="dm-0" ino=101246874 scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=file permissive=0