CVE-2016-4989: Command Injection
First published: Tue Jun 14 2016(Updated: )
setroubleshoot allows local users to bypass an intended container protection mechanism and execute arbitrary commands by (1) triggering an SELinux denial with a crafted file name, which is handled by the _set_tpath function in audit_data.py or via a crafted (2) local_id or (3) analysis_id field in a crafted XML document to the run_fix function in SetroubleshootFixit.py, related to the subprocess.check_output and commands.getstatusoutput functions, a different vulnerability than CVE-2016-4445.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/setroubleshoot | <3.2.27.1 | 3.2.27.1 |
| redhat/setroubleshoot | <3.3.9.1 | 3.3.9.1 |
| Red Hat Setroubleshoot-server | <=- | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 |
Remedy
https://github.com/fedora-selinux/setroubleshoot/commit/dda55aa50db95a25f0d919c3a0d5871827cdc40f
Remedy
https://github.com/fedora-selinux/setroubleshoot/commit/e69378d7e82a503534d29c5939fa219341e8f2ad
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Reference Links
- http://seclists.org/oss-sec/2016/q2/574
- http://securitytracker.com/id/1036144
- https://access.redhat.com/errata/RHSA-2016:1293
- https://bugzilla.redhat.com/show_bug.cgi?id=1346461
- https://github.com/fedora-selinux/setroubleshoot/commit/dda55aa50db95a25f0d919c3a0d5871827cdc40f
- https://github.com/fedora-selinux/setroubleshoot/commit/e69378d7e82a503534d29c5939fa219341e8f2ad
- https://rhn.redhat.com/errata/RHSA-2016-1267.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1346461#c0
- https://access.redhat.com/security/cve/CVE-2016-4445
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1339183
- https://github.com/stealth/troubleshooter/blob/master/straight-shooter.c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1348526
- https://access.redhat.com/errata/RHSA-2016:1267
Frequently Asked Questions
What is the vulnerability description for CVE-2016-4989?
CVE-2016-4989 allows local users to bypass an intended container protection mechanism and execute arbitrary commands through specific crafted file names and fields.
What are the affected versions for CVE-2016-4989?
CVE-2016-4989 affects setroubleshoot versions prior to 3.2.27.1 and 3.3.9.1.
What systems are primarily impacted by CVE-2016-4989?
CVE-2016-4989 impacts Red Hat Enterprise Linux Desktop, Server, Workstation, and HPC Node version 7.0.
How do I fix CVE-2016-4989?
To fix CVE-2016-4989, update setroubleshoot to version 3.2.27.1 or 3.3.9.1 or later.
What kind of exploit does CVE-2016-4989 represent?
CVE-2016-4989 represents a local privilege escalation vulnerability through command execution.
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