CVE-2016-4446: Command Injection
First published: Tue May 24 2016(Updated: )
The allow_execstack plugin for setroubleshoot allows local users to execute arbitrary commands by triggering an execstack SELinux denial with a crafted filename, related to the commands.getoutput function.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/setroubleshoot-plugins | <3.2.27.1 | 3.2.27.1 |
| redhat/setroubleshoot-plugins | <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/eaccf4c0d20a27d3df5ff6de8c9dcc80f6f40718
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1339183
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1348527
- https://github.com/fedora-selinux/setroubleshoot/commit/eaccf4c0d20a27d3df5ff6de8c9dcc80f6f40718
- https://access.redhat.com/errata/RHSA-2016:1267
- https://access.redhat.com/errata/RHSA-2016:1293
- https://bugzilla.redhat.com/show_bug.cgi?id=1339250
- http://seclists.org/oss-sec/2016/q2/575
- http://www.securityfocus.com/bid/91427
- http://www.securitytracker.com/id/1036144
- https://rhn.redhat.com/errata/RHSA-2016-1267.html
Frequently Asked Questions
What is the severity of CVE-2016-4446?
CVE-2016-4446 is considered a high severity vulnerability that allows local users to execute arbitrary commands.
How do I fix CVE-2016-4446?
To mitigate CVE-2016-4446, update the setroubleshoot-plugins package to version 3.2.27.1 or 3.3.9.1 or later.
What systems are affected by CVE-2016-4446?
CVE-2016-4446 affects Red Hat Enterprise Linux Desktop, HPC Node, Server, and Workstation running versions 7.0 and earlier.
What is the exploit vector for CVE-2016-4446?
The exploit vector for CVE-2016-4446 involves triggering an execstack SELinux denial using a specifically crafted filename.
Who can be affected by CVE-2016-4446?
Local users with access to the affected systems can exploit CVE-2016-4446 to execute arbitrary commands.
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