Bug 1339183 – CVE-2016-4445 setroubleshoot: insecure use of commands.getstatusoutput in sealert

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Bug 1339183 - (CVE-2016-4445) CVE-2016-4445 setroubleshoot: insecure use of commands.getstatusoutput in sealert

Summary:	CVE-2016-4445 setroubleshoot: insecure use of commands.getstatusoutput in sea...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-4445

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160621,repor...
Keywords:	Security

Depends On:	1339375 1339377
Blocks:	1332645
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Reported:	2016-05-24 06:49 EDT by Tomas Hoger
Modified:	2016-11-08 10:56 EST (History)
CC List:	7 users (show)

See Also:
Fixed In Version:	setroubleshoot 3.2.23
Doc Type:	Bug Fix
Doc Text:	A shell command injection flaw was found in the way the setroubleshoot executed external commands. A local attacker able to trigger certain SELinux denials could use this flaw to execute arbitrary code with root privileges.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-06-22 05:09:48 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:1267	normal	SHIPPED_LIVE	Important: setroubleshoot and setroubleshoot-plugins security update	2016-06-21 21:24:18 EDT

Groups: None (edit)

Description Tomas Hoger 2016-05-24 06:49:55 EDT

It was discovered that sealert executed external fix commands using commands.getstatusoutput() without properly sanitizing untrusted inputs used as command arguments.  These inputs originated from SELinux AVC messages.  A local user could use this flaw to execute arbitrary code as root if they could trigger an SELinux denial using a file with a specially crafted name.

The use of commands.getstatusoutput() was already removed upstream via the following commit:

https://github.com/fedora-selinux/setroubleshoot/commit/2d12677629ca319310f6263688bb1b7f676c01b7

Comment 1 Tomas Hoger 2016-05-24 06:53:36 EDT

Acknowledgments:

Name: Red Hat Product Security

Comment 8 Tomas Hoger 2016-06-21 07:36:48 EDT

Lifting embargo.

Comment 9 errata-xmlrpc 2016-06-21 17:24:56 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:1267 https://access.redhat.com/errata/RHSA-2016:1267

Comment 10 Tomas Hoger 2016-06-22 05:04:59 EDT

This issue was fixed upstream in version 3.2.23.  The setroubleshoot packages in Red Hat Enterprise Linux 7 were updated from version 3.2.17 to version 3.2.24 via RHBA-2015:2287, released as part of Red Hat Enterprise Linux 7.2.

https://rhn.redhat.com/errata/RHBA-2015-2287.html

Therefore, this issue was corrected in that update.

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