Bug 974932
| Summary: | selinux denies rsyslog to drop priviliges | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Jens Kuehnel <bugzilla-redhat> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED ERRATA | QA Contact: | Michal Trunecka <mtruneck> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.4 | CC: | dwalsh, ebenes, mmalik, mtruneck |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.7.19-208.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-11-21 10:31:12 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: | |||
02dd9555a1e7c22c1ce8276ca7e82dabc0a11223 fixes this in git. Back ported. 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. http://rhn.redhat.com/errata/RHBA-2013-1598.html |
Description of problem: rsyslog can drop privileges with option $PrivDropToUser and $PrivDropToGroup, but SElinux does not allow setuid/setgid. Version-Release number of selected component (if applicable): selinux-policy-3.7.19-195.el6_4.10.noarch How reproducible: 100% Steps to Reproduce: 1. Create user rsyslog with: useradd -r rsyslog 2. Remove line "$ModLoad imklog" to rsyslog.conf 3. Add line "$PrivDropToUser rsyslog" to rsyslog.conf 3. Fix permission in /var/log/ to allow writes 4. restart Actual results: could not set requested userid: Operation not permitted Expected results: no output, and eUID Additional info: I created the following te to fix this: module rsyslog-drop-priv 1.0; require { type syslogd_t; class capability setuid; class capability setgid; } #============= syslogd_t ============== allow syslogd_t self:capability setuid; allow syslogd_t self:capability setgid;