Bug 445860
| Summary: | libnss_wins.so generates a lot of selinux avc denials | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Tomáš Bžatek <tbzatek> |
| Component: | samba | Assignee: | Simo Sorce <ssorce> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 9 | CC: | tsmetana |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-07-14 16:30:56 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: | |||
Changing version to '9' as part of upcoming Fedora 9 GA. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping This message is a reminder that Fedora 9 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 9. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '9'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 9's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 9 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: Having wins as a first hostname resolver option generates a lot of SELinux AVC denials, because it's trying to access /etc/samba/smb.conf or ./smb.conf Version-Release number of selected component (if applicable): samba-3.2.0-1.pre3.9.fc9.i386 How reproducible: - The libnss_wins.so module affects all applications doing network name resolution. If an application/daemon is confined by a selinux policy, every attempt to access smb.conf can cause avc denial. - So far these denials were observed from sshd, procmail, sendmail, gnome-settings-daemon/"gdm-session-wor" Steps to Reproduce: 1. Edit /etc/nsswitch.conf and put 'wins' as the first option on the 'hosts' line Actual results: - Basically there are two types of denials: 1. SELinux is preventing sshd (sshd_t) "getattr" to /etc/samba/smb.conf (samba_etc_t). Additional Information: Source Context system_u:system_r:sshd_t:s0-s0:c0.c1023 Target Context system_u:object_r:samba_etc_t:s0 Target Objects /etc/samba/smb.conf [ file ] Source sshd Source Path /usr/sbin/sshd Port <Unknown> Host vmrawhide.englab.brq.redhat.com Source RPM Packages openssh-server-5.0p1-1.fc9 Target RPM Packages samba-common-3.2.0-1.pre3.10.fc9 Policy RPM selinux-policy-3.3.1-42.fc9 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name vmrawhide.englab.brq.redhat.com Platform Linux vmrawhide.englab.brq.redhat.com 2.6.25-14.fc9.i686 #1 SMP Thu May 1 06:28:41 EDT 2008 i686 i686 Alert Count 15 Raw Audit Messages: host=vmrawhide.englab.brq.redhat.com type=AVC msg=audit(1210332854.643:961): avc: denied { getattr } for pid=22552 comm="sshd" path="/etc/samba/smb.conf" dev=dm-0 ino=1737231 scontext=system_u:system_r:sshd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:samba_etc_t:s0 tclass=file host=vmrawhide.englab.brq.redhat.com type=SYSCALL msg=audit(1210332854.643:961): arch=40000003 syscall=195 success=no exit=-13 a0=b973d420 a1=bf9ee5d4 a2=6d6 ff4 a3=bf9ee5d4 items=0 ppid=2129 pid=22552 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="sshd" exe ="/usr/sbin/sshd" subj=system_u:system_r:sshd_t:s0-s0:c0.c1023 key=(null) 2. SELinux is preventing sshd (sshd_t) "read" to ./smb.conf (samba_etc_t). Additional Information: Source Context system_u:system_r:sshd_t:s0-s0:c0.c1023 Target Context system_u:object_r:samba_etc_t:s0 Target Objects ./smb.conf [ file ] Source sshd Source Path /usr/sbin/sshd Port <Unknown> Host vmrawhide.englab.brq.redhat.com Source RPM Packages openssh-server-5.0p1-1.fc9 Target RPM Packages Policy RPM selinux-policy-3.3.1-42.fc9 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name vmrawhide.englab.brq.redhat.com Platform Linux vmrawhide.englab.brq.redhat.com 2.6.25-14.fc9.i686 #1 SMP Thu May 1 06:28:41 EDT 2008 i686 i686 Alert Count 15 Raw Audit Messages: host=vmrawhide.englab.brq.redhat.com type=AVC msg=audit(1210332854.650:962): avc: denied { read } for pid=22552 comm="sshd" name="smb.conf" dev=dm-0 ino=1 737231 scontext=system_u:system_r:sshd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:samba_etc_t:s0 tclass=file host=vmrawhide.englab.brq.redhat.com type=SYSCALL msg=audit(1210332854.650:962): arch=40000003 syscall=5 success=no exit=-13 a0=b973d420 a1=8000 a2=0 a3=8000 items=0 ppid=2129 pid=22552 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="sshd" exe="/usr/sbin/ssh d" subj=system_u:system_r:sshd_t:s0-s0:c0.c1023 key=(null)