Bug 1565226
| Summary: | Red Hat Certificate System (RHCS) gets execstack denial during startup | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | David Mulford <dmulford> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | unspecified | Docs Contact: | Mirek Jahoda <mjahoda> |
| Priority: | unspecified | ||
| Version: | 7.4 | CC: | afarley, csutherl, lvrabec, mgrepl, mmalik, plautrba, ssekidde, zpytela |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.13.1-197.el7 | Doc Type: | Release Note |
| Doc Text: |
A new SELinux boolean called tomcat_use_execmem was introduced so that system administrator can decide if such use case should be allowed or not.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-10-30 10:03:16 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: | |||
Based on the content of the SELinux denial, Tomcat server tries to run java, which behaves differently than Tomcat. Here is the only way to escape from the tomcat_t domain: # sesearch -s tomcat_t -c process -T Found 1 semantic te rules: type_transition tomcat_t abrt_helper_exec_t : process abrt_helper_t; # Could this be related to https://bugzilla.redhat.com/show_bug.cgi?id=1432083 ? I would say we should create new boolean called tomcat_execmem which will allow make stack executable. 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, 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-2018:3111 |
Description of problem: After upgrading from RHEL 7.3 and RHCS 9.1 to RHEL 7.4 and RHCS 9.2, the following AVC denial is seen when starting RHCS services. type=AVC msg=audit(1523027312.736:510): avc: denied { execstack } for pid=2642 comm="java" scontext=system_u:system_r:tomcat_t:s0 tcontext=system_u:system_r:tomcat_t:s0 tclass=process Version-Release number of selected component (if applicable): - RHEL 7.4 - RHCS 9.2 Actual results: RHCS services fail to start with AVC denial listed above. Expected results: All RHCS services should start successfully.