Bug 1000775
| Summary: | SELinux is preventing /usr/bin/bash from getattr access on the file /usr/sbin/xtables-multi. | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Michael Hampton <error> | ||||
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 19 | CC: | dominick.grift, dwalsh, lvrabec, mgrepl | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | selinux-policy-3.12.1-74.1.fc19 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2013-09-06 14:07:03 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: | |||||||
| Attachments: |
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Can you attempt this in permissive mode and collect all of the AVCs? Created attachment 790687 [details]
audit.log
These are the AVCs and corresponding syscalls I'm seeing after using semanage permissive -l ipsec_t and restarting strongswan.
(In reply to Michael Hampton from comment #2) > semanage permissive -l ipsec_t Make that semanage permissive -a ipsec_t. It's been a long week already and it's only Monday. commit 6b78aba4c9edf94d0c1117968615351c9ad43f1e
Author: Miroslav Grepl <mgrepl>
Date: Thu Aug 29 09:42:05 2013 +0200
Allow ipsec_t to domtrans to iptables_t
selinux-policy-3.12.1-74.1.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/selinux-policy-3.12.1-74.1.fc19 Package selinux-policy-3.12.1-74.1.fc19: * should fix your issue, * was pushed to the Fedora 19 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing selinux-policy-3.12.1-74.1.fc19' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-15819/selinux-policy-3.12.1-74.1.fc19 then log in and leave karma (feedback). I ran "semanage permissive -d ipsec_t", installed selinux-policy-3.12.1-74.1.fc19, and no longer see AVC denials. StrongSwan is updating the firewall rules correctly now. Thanks! Thank you for testing. selinux-policy-3.12.1-74.1.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: When strongSwan is configured to automatically add firewall rules to iptables after successfully establishing a security association using "leftfirewall=yes" in ipsec.conf, this SELinux denial occurs, and the firewall rules are not added. SELinux is preventing /usr/bin/bash from getattr access on the file /usr/sbin/xtables-multi. ***** Plugin catchall (100. confidence) suggests *************************** If you believe that bash should be allowed getattr access on the xtables-multi file 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: # grep _updown /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:ipsec_t:s0 Target Context system_u:object_r:iptables_exec_t:s0 Target Objects /usr/sbin/xtables-multi [ file ] Source _updown Source Path /usr/bin/bash Port <Unknown> Host underground Source RPM Packages bash-4.2.45-1.fc19.x86_64 Target RPM Packages iptables-1.4.18-1.fc19.x86_64 Policy RPM selinux-policy-3.12.1-71.fc19.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name underground Platform Linux underground 3.10.7-200.fc19.x86_64 #1 SMP Thu Aug 15 23:19:45 UTC 2013 x86_64 x86_64 Alert Count 2 First Seen 2013-08-25 00:21:35 EDT Last Seen 2013-08-25 00:21:35 EDT Local ID 0e98f056-9f25-4054-adfb-4cff0e2ba587 Raw Audit Messages type=AVC msg=audit(1377404495.485:1982): avc: denied { getattr } for pid=27991 comm="_updown" path="/usr/sbin/xtables-multi" dev="dm-1" ino=11017995 scontext=system_u:system_r:ipsec_t:s0 tcontext=system_u:object_r:iptables_exec_t:s0 tclass=file type=SYSCALL msg=audit(1377404495.485:1982): arch=x86_64 syscall=stat success=no exit=EACCES a0=2092340 a1=7fffed9090f0 a2=7fffed9090f0 a3=30ee6856f0 items=0 ppid=27990 pid=27991 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=_updown exe=/usr/bin/bash subj=system_u:system_r:ipsec_t:s0 key=(null) Hash: _updown,ipsec_t,iptables_exec_t,file,getattr Version-Release number of selected component (if applicable): selinux-policy-3.12.1-71.fc19.noarch How reproducible: Always Steps to Reproduce: 1. Configure an IPSec connection in strongSwan ipsec.conf, using leftfirewall=yes on the local Fedora 19 machine. 2. Start strongSwan. 3. Wait for the IPSec connection to be established. Actual results: The security associations are established, but the necessary firewall rules are not added, and this SELinux denial occurs. IPSec traffic cannot be passed. Expected results: No SELinux denials occur, and strongSwan can add the firewall rules. IPSec traffic passes successfully. Additional info: This issue doesn't occur on CentOS 6.4. The strongSwan website has a large number of test configuration examples, many or most of which could be used to reproduce this.