Bug 790144
| Summary: | SELinux is preventing /usr/libexec/polkit-1/polkit-agent-helper-1 from 'read' accesses on the None /var/log/gdm/:2-greeter.log. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Grosswiler Roger <roger> |
| Component: | gdm | Assignee: | Ray Strode [halfline] <rstrode> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 16 | CC: | collura, dominick.grift, dwalsh, mgrepl, rstrode |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:611b7c30b3df2b6e3b8721e432d4959df162b55c1c710b286876b501cbc6f8f4 | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-02-13 22:01:50 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: | |||
This is a leak. not sure why it would be reading :2-greeter.log, but it definitely writes to it...that's where stderr goes. It is not reading, but you opened it for read and passed that access onto your children which is causing this AVC. We currently allow xserver_xdm_append_log(policykit_auth_t) The proper fix for this would be to not open this file for read. stdout and stderr are normally opened for both read and write (just look at ls -l /proc/*/fd/[12]) . I have some vague notion of hitting a problem before when opening either STDIN as O_RDONLY or STDOUT/STDERR but that was years ago and I can't find any evidence it even happened looking through git logs for various projects, so I'll make the change. filename looks related https://bugzilla.redhat.com/show_bug.cgi?id=804450 This message is a reminder that Fedora 16 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 16. It is Fedora's policy to close all bug reports from releases that are no longer maintained.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 '16'. 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 16'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 16 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, you are encouraged to click on "Clone This Bug" and open it against that version of Fedora. 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 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 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. |
libreport version: 2.0.8 executable: /usr/bin/python hashmarkername: setroubleshoot kernel: 3.2.5-3.fc16.x86_64 reason: SELinux is preventing /usr/libexec/polkit-1/polkit-agent-helper-1 from 'read' accesses on the None /var/log/gdm/:2-greeter.log. time: Mon 13 Feb 2012 19:38:07 CET description: :SELinux is preventing /usr/libexec/polkit-1/polkit-agent-helper-1 from 'read' accesses on the None /var/log/gdm/:2-greeter.log. : :***** Plugin catchall (100. confidence) suggests *************************** : :If you believe that polkit-agent-helper-1 should be allowed read access on the :2-greeter.log <Unbekannt> 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 polkit-agent-he /var/log/audit/audit.log | audit2allow -M mypol :# semodule -i mypol.pp : :Additional Information: :Source Context system_u:system_r:policykit_auth_t:s0-s0:c0.c1023 :Target Context system_u:object_r:xdm_log_t:s0 :Target Objects /var/log/gdm/:2-greeter.log [ None ] :Source polkit-agent-he :Source Path /usr/libexec/polkit-1/polkit-agent-helper-1 :Port <Unbekannt> :Host (removed) :Source RPM Packages polkit-0.102-3.fc16.x86_64 :Target RPM Packages :Policy RPM selinux-policy-3.10.0-75.fc16.noarch :Selinux Enabled True :Policy Type targeted :Enforcing Mode Enforcing :Host Name (removed) :Platform Linux (removed) 3.2.5-3.fc16.x86_64 #1 SMP Thu Feb 9 : 01:24:38 UTC 2012 x86_64 x86_64 :Alert Count 1 :First Seen Mon 13 Feb 2012 14:32:38 CET :Last Seen Mon 13 Feb 2012 14:32:38 CET :Local ID 70d49708-fccb-4155-a807-bbf7aa41313a : :Raw Audit Messages :type=AVC msg=audit(1329139958.735:416): avc: denied { read } for pid=29719 comm="polkit-agent-he" path="/var/log/gdm/:2-greeter.log" dev=dm-1 ino=655774 scontext=system_u:system_r:policykit_auth_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xdm_log_t:s0 tclass=filenode=(removed) type=SYSCALL msg=audit(1329139958.735:416): arch=c000003e syscall=59 success=yes exit=0 a0=34900071b0 a1=7fffdb9006d0 a2=21a4b00 a3=7fffdb9001e0 items=0 ppid=19843 pid=29719 auid=42 uid=42 gid=42 euid=0 suid=0 fsuid=0 egid=42 sgid=42 fsgid=42 tty=(none) ses=15 comm="polkit-agent-he" exe="/usr/libexec/polkit-1/polkit-agent-helper-1" subj=system_u:system_r:policykit_auth_t:s0-s0:c0.c1023 key=(null) : : :Hash: polkit-agent-he,policykit_auth_t,xdm_log_t,None,read : :audit2allow : : :audit2allow -R : :