Bug 1691914
| Summary: | console-login-helper-messages-motdgen: Generated MOTD not displayed - AVC denial | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Robert Fairley <rfairley> |
| Component: | console-login-helper-messages | Assignee: | Robert Fairley <rfairley> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | low | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 29 | CC: | dustymabe, rfairley |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | noarch | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | console-login-helper-messages-0.16-2.fc28 console-login-helper-messages-0.16-2.fc29 console-login-helper-messages-0.16-2.fc30 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-04-03 02:02:18 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
console-login-helper-messages-0.16-1.fc29 has been submitted as an update to Fedora 29. https://bodhi.fedoraproject.org/updates/FEDORA-2019-7a90d44da3 console-login-helper-messages-0.16-2.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2019-b41fdb4c81 console-login-helper-messages-0.16-2.fc29 has been submitted as an update to Fedora 29. https://bodhi.fedoraproject.org/updates/FEDORA-2019-f96dcbfe3a console-login-helper-messages-0.16-2.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-f96dcbfe3a console-login-helper-messages-0.16-2.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-b41fdb4c81 console-login-helper-messages-0.16-2.fc30 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-c09c5fc553 console-login-helper-messages-0.16-2.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report. console-login-helper-messages-0.16-2.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-c09c5fc553 console-login-helper-messages-0.16-2.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report. console-login-helper-messages-0.16-2.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: console-login-helper-messages-motdgen-0.13-4.fc29 generates a file in /run/console-login-helper-messages/console-login-helper-messages.motd which is to be displayed upon SSH login. When logging in, the message is not displayed, and an AVC denial is given. Version-Release number of selected component (if applicable): 0.13-4 How reproducible: Always Steps to Reproduce: 1. Log into a Fedora 29 system that you can SSH into later on (I'm using Fedora 29 Cloud Base to reproduce this). The file /etc/pam.d/sshd should have a line that looks like `session optional pam_motd.so` present. 2. Run `dnf update -y` to make sure the latest versions of selinux-policy and pam are present. 3. Run `dnf install -y console-login-helper-messages-motdgen to install the MOTD generation functionality. 4. Run `systemctl start console-login-helper-messages-motdgen.service` to run the unit that generates the MOTD. 5. SSH into the system as the user you installed `console-login-helper-messages-motdgen`. 6. Run `ausearch -m avc --start recent`. This will show an AVC denial that looks like: ``` time->Fri Mar 22 19:41:24 2019 type=AVC msg=audit(1553283684.735:139): avc: denied { read } for pid=638 comm="sshd" name="console-login-helper-messages.motd" dev="tmpfs" ino=18184 scontext=system_u:system_r:sshd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:var_run_t:s0 tclass=file permissive=0 ``` Actual results: The MOTD is not displayed on SSH login, and an AVC denial like above is given. Expected results: The MOTD displays on SSH login (the default generated by motdgen looks like `Fedora (29 (Cloud Edition))`), and no AVC denial is given. Additional info: A fix for this has been made and will be present in the v0.16 version of the package https://github.com/rfairley/console-login-helper-messages/releases/tag/v0.16. This bug is just filed for reference in case it comes up in an earlier version of the package.