Bug 250907
| Summary: | SELinux is preventing /usr/sbin/in.ntalkd (ktalkd_t) "search" to / (devpts_t). | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Jacob Masaki <jtmasaki> | ||||
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 10 | CC: | gmaxwell, vcrhonek | ||||
| Target Milestone: | --- | Keywords: | Reopened | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Current | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2009-11-18 10:29:54 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: | |||||||
| Attachments: |
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Created attachment 160704 [details]
Output from selinux troubleshooter.
Fixed in selinux-policy-2.6.4-41 Bulk closing all bugs in Fedora updates in the modified state. If you bug is not fixed, please reopen. Problem seems to be back, ntalk is incorrectly telling me that the other party is refusing messages. [root@cherenkov gmaxwell]# sealert -l b99d40e7-3aba-4703-9dea-b2df3d8b905a Summary: SELinux prevented in.ntalkd from using the terminal 4. Detailed Description: SELinux prevented in.ntalkd from using the terminal 4. In most cases daemons do not need to interact with the terminal, usually these avc messages can be ignored. All of the confined daemons should have dontaudit rules around using the terminal. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this selinux-policy. If you would like to allow all daemons to interact with the terminal, you can turn on the allow_daemons_use_tty boolean. Allowing Access: Changing the "allow_daemons_use_tty" boolean to true will allow this access: "setsebool -P allow_daemons_use_tty=1." Fix Command: setsebool -P allow_daemons_use_tty=1 Additional Information: Source Context unconfined_u:system_r:ktalkd_t:s0-s0:c0.c1023 Target Context unconfined_u:object_r:unconfined_devpts_t:s0 Target Objects 4 [ chr_file ] Source in.ntalkd Source Path /usr/sbin/in.ntalkd Port <Unknown> Host cherenkov Source RPM Packages talk-server-0.17-30.2.4 Target RPM Packages Policy RPM selinux-policy-3.5.13-45.fc10 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name allow_daemons_use_tty Host Name cherenkov Platform Linux cherenkov 2.6.27.12-170.2.5.fc10.x86_64 #1 SMP Wed Jan 21 01:33:24 EST 2009 x86_64 x86_64 Alert Count 5 First Seen Fri Feb 20 23:16:01 2009 Last Seen Fri Feb 20 23:22:44 2009 Local ID b99d40e7-3aba-4703-9dea-b2df3d8b905a Line Numbers Raw Audit Messages node=cherenkov type=AVC msg=audit(1235190164.503:7176): avc: denied { write } for pid=17203 comm="in.ntalkd" name="4" dev=devpts ino=6 scontext=unconfined_u:system_r:ktalkd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:unconfined_devpts_t:s0 tclass=chr_file node=cherenkov type=SYSCALL msg=audit(1235190164.503:7176): arch=c000003e syscall=2 success=no exit=-13 a0=7fffada46470 a1=101 a2=b a3=7fffada45c10 items=0 ppid=17198 pid=17203 auid=500 uid=99 gid=5 euid=99 suid=99 fsuid=99 egid=5 sgid=5 fsgid=5 tty=(none) ses=1073 comm="in.ntalkd" exe="/usr/sbin/in.ntalkd" subj=unconfined_u:system_r:ktalkd_t:s0-s0:c0.c1023 key=(null) [root@cherenkov gmaxwell]# getsebool allow_daemons_use_tty allow_daemons_use_tty --> on [root@cherenkov gmaxwell]# cat /etc/redhat-release Fedora release 10 (Cambridge) [root@cherenkov gmaxwell]# uname -a Linux cherenkov 2.6.27.12-170.2.5.fc10.x86_64 #1 SMP Wed Jan 21 01:33:24 EST 2009 x86_64 x86_64 x86_64 GNU/Linux [root@cherenkov gmaxwell]# rpm -q selinux-policy selinux-policy-3.5.13-45.fc10.noarch Miroslav, add term_use_all_terms(ktalk_t) ktalk needs to write to terminals. Fixed in selinux-policy-3.5.13-47.fc10 This message is a reminder that Fedora 10 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 10. 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 '10'. 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 10'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 10 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 |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.5) Gecko/20070718 Fedora/2.0.0.5-1.fc7 Firefox/2.0.0.5 Description of problem: When I run talk on my local machine (to another local terminal) it replies with "Target machine is too confused to talk to us" and SELinux troubleschooter pops up with a denial. With SELinux set to permissive everything works fine. Version-Release number of selected component (if applicable): talk-server-0.17-29.2.2, selinux-policy-2.6.4-30.fc7, selinux-policy-targeted-2.6.4-30.fc7 How reproducible: Always Steps to Reproduce: 1. Install talk-server 2. Activate and start xinetd through system-config-services 3. Activate talk and ntalk under the "on demand services" tab 4. Run "talk" from one local terminal to another ("who am i" gives the info you need to choose proper arguments. Actual Results: Talk displays "Target machine is too confused to talk to us" then tries to connect until it is killed. Expected Results: Talk should have connected the two terminals so they can send messages back and forth. Additional info: