Bug 678103
| Summary: | SELinux is preventing /usr/sbin/dnsmasq from 'search' accesses on the dossier /var/lib/tftpboot. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Michael S. <misc> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 14 | CC: | dwalsh, mgrepl |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:3ca1a441a7882caa6682adbc6f5e52846ea6fae6d2929a682d32f39f94cf0f57 | ||
| Fixed In Version: | selinux-policy-3.9.7-31.fc14 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-02-24 20:54:03 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: | |||
Dnsmasq can be used as a tftp server, and I use it with virt-manager to do pxe installation
$ ls -lZd /var/lib/tftpboot
drwxr-xr-x. root root system_u:object_r:tftpdir_rw_t:s0 /var/lib/tftpboot
Dnsmasq is runing with :
1636 ? S 0:07 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --listen-address 192.168.122.1 --except-interface lo --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-lease-max=253 --enable-tftp --tftp-root /var/lib/tftpboot --dhcp-boot pxelinux.0
And I have added <tftp root='/var/lib/tftpboot' /> to/etc/libvirt/qemu/networks/default.xml :
<network>
<name>default</name>
<uuid>xxx</uuid>
<forward mode='nat'/>
<bridge name='virbr0' stp='on' delay='0' />
<ip address='192.168.122.1' netmask='255.255.255.0'>
<tftp root='/var/lib/tftpboot' />
<dhcp>
<range start='192.168.122.2' end='192.168.122.254' />
<bootp file='pxelinux.0' />
</dhcp>
</ip>
</network>
Miroslav can you change interface(`tftp_read_content',` gen_require(` type tftpdir_t; type tftpdir_rw_t; ') read_files_pattern($1, tftpdir_t, tftpdir_t) read_lnk_files_pattern($1, tftpdir_t, tftpdir_t) read_files_pattern($1, tftpdir_rw_t, tftpdir_rw_t) read_lnk_files_pattern($1, tftpdir_rw_t, tftpdir_rw_t) ') Fixed in selinux-policy-3.9.7-31.fc14 selinux-policy-3.9.7-31.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/selinux-policy-3.9.7-31.fc14 selinux-policy-3.9.7-31.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update selinux-policy'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/selinux-policy-3.9.7-31.fc14 selinux-policy-3.9.7-31.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report. |
SELinux is preventing /usr/sbin/dnsmasq from 'search' accesses on the dossier /var/lib/tftpboot. ***** Plugin catchall (100. confidence) suggests *************************** If you believe that dnsmasq should be allowed search access on the tftpboot directory 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 dnsmasq /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 Target Context system_u:object_r:tftpdir_rw_t:s0 Target Objects /var/lib/tftpboot [ dir ] Source dnsmasq Source Path /usr/sbin/dnsmasq Port <Inconnu> Host (removed) Source RPM Packages dnsmasq-2.52-1.fc13 Target RPM Packages Policy RPM selinux-policy-3.9.7-29.fc14 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 2.6.35.10-74.fc14.i686.PAE #1 SMP Thu Dec 23 16:10:47 UTC 2010 i686 i686 Alert Count 2 First Seen mer. 16 févr. 2011 18:59:13 CET Last Seen mer. 16 févr. 2011 19:09:17 CET Local ID 5cab97e3-c543-419b-a41c-d12224f2f8f2 Raw Audit Messages type=AVC msg=audit(1297879757.622:1696): avc: denied { search } for pid=1636 comm="dnsmasq" name="tftpboot" dev=dm-1 ino=237976 scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tftpdir_rw_t:s0 tclass=dir type=SYSCALL msg=audit(1297879757.622:1696): arch=i386 syscall=open success=no exit=EACCES a0=8e3d008 a1=8000 a2=0 a3=63 items=0 ppid=1 pid=1636 auid=4294967295 uid=99 gid=40 euid=99 suid=99 fsuid=99 egid=40 sgid=40 fsgid=40 tty=(none) ses=4294967295 comm=dnsmasq exe=/usr/sbin/dnsmasq subj=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null) Hash: dnsmasq,dnsmasq_t,tftpdir_rw_t,dir,search audit2allow #============= dnsmasq_t ============== allow dnsmasq_t tftpdir_rw_t:dir search; audit2allow -R #============= dnsmasq_t ============== allow dnsmasq_t tftpdir_rw_t:dir search;