Bug 1476345
| Summary: | SELinux is preventing master from using the 'dac_read_search' capabilities. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Colin J Thomson <colin.thomson> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 26 | CC: | dominick.grift, dwalsh, fedora, lsm5, lvrabec, mgrepl, plautrba, pmoore, ssekidde |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:ae164c6a868470cc60082c8d8172c20d802cc01eff808fed1bde42abe8b3c321; | ||
| Fixed In Version: | selinux-policy-3.13.1-260.4.fc26 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-15 17:21:37 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Can confirm this with kernel-4.12.5-300.fc26.x86_64 (from updates-testing) and selinux-policy-3.13.1-260.3.fc26.noarch.
Also get this for other postfix processes, e.g.:
Aug 13 22:43:51 audit[4068]: AVC avc: denied { dac_read_search } for pid=4068 comm="smtp" capability=2 scontext=system_u:system_r:postfix_smtp_t:s0 tcontext=system_u:system_r:postfix_smtp_t:s0 tclass=capability permissive=0
Aug 13 22:43:51 audit[1408]: AVC avc: denied { dac_read_search } for pid=1408 comm="master" capability=2 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:system_r:postfix_master_t:s0 tclass=capability permissive=0
selinux-policy-3.13.1-260.4 in "pending" fixes this now, Thanks selinux-policy-3.13.1-260.4.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-323fb6bb66 selinux-policy-3.13.1-260.4.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-323fb6bb66 selinux-policy-3.13.1-260.4.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: SELinux is preventing master from using the 'dac_read_search' capabilities. ***** Plugin dac_override (91.4 confidence) suggests ********************** If you want to help identify if domain needs this access or you have a file with the wrong permissions on your system Then turn on full auditing to get path information about the offending file and generate the error again. Do Turn on full auditing # auditctl -w /etc/shadow -p w Try to recreate AVC. Then execute # ausearch -m avc -ts recent If you see PATH record check ownership/permissions on file, and fix it, otherwise report as a bugzilla. ***** Plugin catchall (9.59 confidence) suggests ************************** If you believe that master should have the dac_read_search capability 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 'master' --raw | audit2allow -M my-master # semodule -X 300 -i my-master.pp Additional Information: Source Context system_u:system_r:postfix_master_t:s0 Target Context system_u:system_r:postfix_master_t:s0 Target Objects Unknown [ capability ] Source master Source Path master Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM <Unknown> Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 4.12.4-300.fc26.x86_64 #1 SMP Thu Jul 27 23:09:13 UTC 2017 x86_64 x86_64 Alert Count 9 First Seen 2017-07-28 17:35:50 BST Last Seen 2017-07-28 17:41:50 BST Local ID 1cb37858-5b8e-47c2-a99e-27897826b553 Raw Audit Messages type=AVC msg=audit(1501260110.205:1660): avc: denied { dac_read_search } for pid=1018 comm="master" capability=2 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:system_r:postfix_master_t:s0 tclass=capability permissive=0 Hash: master,postfix_master_t,postfix_master_t,capability,dac_read_search Additional info: component: selinux-policy reporter: libreport-2.9.1 hashmarkername: setroubleshoot kernel: 4.12.4-300.fc26.x86_64 type: libreport