| Summary: | SELinux is preventing /usr/libexec/dovecot/auth from 'search' accesses on the dossier /sys. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Nicolas Mailhot <nicolas.mailhot> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | dominick.grift, dwalsh, mgrepl, nicolas.mailhot |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:71f1d1bd7b011e8899536ad4843891b47ff1355a57b4c14e713dadccc2474311 | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-06-15 20:20:46 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
On a rawhide system freshly updated with all the latest stuff and rebooted after relabeling I wonder if this is cgroupfs related or selinuxfs related. I guess all programs using libselinux will want to get attributes of selinuxfs? which is now in /sys/fs/selinux? Can you reproduce this in permissive mode please. We're only seeying the first syscall (since selinux is blocking that we dont see what it wants next) I suspects it has business in either /sys/fs/cgroup or sys/fs/selinux, would like to see which one it is In permissive mode :
SELinux is preventing /usr/libexec/dovecot/auth from search access on the dossier /sys.
***** Plugin catchall (100. confiance) suggéré*******************************
Siyou believe that auth should be allowed search access on the sys directory by default.
Alorsyou should report this as a bug.
You can generate a local policy module to allow this access.
Faire
allow this access for now by executing:
# grep auth /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
Additional Information:
Contexte source system_u:system_r:dovecot_auth_t:s0
Contexte cible system_u:object_r:sysfs_t:s0
Objets du contexte /sys [ dir ]
Source auth
Chemin de la source /usr/libexec/dovecot/auth
Port <Inconnu>
Hôte (removed)
Paquetages RPM source dovecot-2.0.13-1.fc16
Paquetages RPM cible filesystem-2.4.42-1.fc16
RPM de la statégie selinux-policy-3.9.16-28.fc16
Selinux activé True
Type de stratégie targeted
Mode strict Permissive
Nom de l'hôte (removed)
Plateforme Linux arekh.okg 3.0-0.rc3.git0.3.fc16.x86_64 #1
SMP Tue Jun 14 17:13:27 UTC 2011 x86_64 x86_64
Compteur d'alertes 1
Première alerte mer. 15 juin 2011 22:06:14 CEST
Dernière alerte mer. 15 juin 2011 22:06:14 CEST
ID local 11919086-7e20-4359-8c25-9bbf4fc973a4
Messages d'audit bruts
type=AVC msg=audit(1308168374.636:264): avc: denied { search } for pid=6044 comm="auth" name="/" dev=sysfs ino=1 scontext=system_u:system_r:dovecot_auth_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=dir
type=SYSCALL msg=audit(1308168374.636:264): arch=x86_64 syscall=statfs success=yes exit=0 a0=36a861665e a1=7fff01d83a60 a2=1000 a3=314f80e0ca items=0 ppid=5464 pid=6044 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=auth exe=/usr/libexec/dovecot/auth subj=system_u:system_r:dovecot_auth_t:s0 key=(null)
Hash: auth,dovecot_auth_t,sysfs_t,dir,search
audit2allow
#============= dovecot_auth_t ==============
allow dovecot_auth_t sysfs_t:dir search;
audit2allow -R
#============= dovecot_auth_t ==============
allow dovecot_auth_t sysfs_t:dir search;
ok is searching statfs i guess and not cgroupfs or securitfs, i guess we can allow this for now. http://git.fedorahosted.org/git/?p=selinux-policy.git;a=commitdiff;h=0daf404d1596573ea704981c91d47c2fce26112a I meant its statting /sys any ways i added it to master branch This is related I believe to libselinux changes with systemd. Fixed in selinux-policy-3.9.16-29.fc16 |
SELinux is preventing /usr/libexec/dovecot/auth from 'search' accesses on the dossier /sys. ***** Plugin catchall (100. confidence) suggests *************************** If you believe that auth should be allowed search access on the sys 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 auth /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:dovecot_auth_t:s0 Target Context system_u:object_r:sysfs_t:s0 Target Objects /sys [ dir ] Source auth Source Path /usr/libexec/dovecot/auth Port <Inconnu> Host (removed) Source RPM Packages dovecot-2.0.13-1.fc16 Target RPM Packages filesystem-2.4.42-1.fc16 Policy RPM selinux-policy-3.9.16-28.fc16 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 3.0-0.rc3.git0.3.fc16.x86_64 #1 SMP Tue Jun 14 17:13:27 UTC 2011 x86_64 x86_64 Alert Count 2 First Seen mer. 15 juin 2011 21:07:42 CEST Last Seen mer. 15 juin 2011 21:07:42 CEST Local ID 3372bf8c-1d45-499d-97ba-64259b0a282d Raw Audit Messages type=AVC msg=audit(1308164862.492:94): avc: denied { search } for pid=2624 comm="auth" name="/" dev=sysfs ino=1 scontext=system_u:system_r:dovecot_auth_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=dir type=SYSCALL msg=audit(1308164862.492:94): arch=x86_64 syscall=statfs success=no exit=EACCES a0=25215fa a1=7fffda969610 a2=5 a3=fffffffffffff61f items=0 ppid=2602 pid=2624 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=auth exe=/usr/libexec/dovecot/auth subj=system_u:system_r:dovecot_auth_t:s0 key=(null) Hash: auth,dovecot_auth_t,sysfs_t,dir,search audit2allow #============= dovecot_auth_t ============== allow dovecot_auth_t sysfs_t:dir search; audit2allow -R #============= dovecot_auth_t ============== allow dovecot_auth_t sysfs_t:dir search;