Bug 1332505 – CVE-2016-3717 ImageMagick: Local file read

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Bug 1332505 - (CVE-2016-3717) CVE-2016-3717 ImageMagick: Local file read

Summary:	CVE-2016-3717 ImageMagick: Local file read

Status:	CLOSED ERRATA

Aliases:	CVE-2016-3717

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

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

URL:
Whiteboard:	impact=important,public=20160503,repo...
Keywords:	Security

Depends On:	1332638 1332634 1332639 1332640 1332641 1332695 1332930
Blocks:	1332507
	Show dependency tree / graph

Reported:	2016-05-03 07:04 EDT by Andrej Nemec
Modified:	2016-06-02 08:59 EDT (History)
CC List:	14 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	It was discovered that certain ImageMagick coders and pseudo-protocols did not properly prevent security sensitive operations when processing specially crafted images. A remote attacker could create a specially crafted image that, when processed by an application using ImageMagick or an unsuspecting user using the ImageMagick utilities, would allow the attacker to disclose the contents of arbitrary files.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-06-02 08:59:31 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:0726	normal	SHIPPED_LIVE	Important: ImageMagick security update	2016-05-09 18:03:43 EDT

Groups: None (edit)

Description Andrej Nemec 2016-05-03 07:04:21 EDT

A vulnerability was found in ImageMagick. It is possible to get content of the files from the server by using ImageMagick's 'label' pseudo protocol.

Comment 2 Stefan Cornelius 2016-05-03 11:20:01 EDT

Mitigation:

Details can be found under the resolve tab at https://access.redhat.com/security/vulnerabilities/2296071

Red Hat Enterprise Linux 6 and 7
================================

As a workaround the /etc/ImageMagick/policy.xml file can be edited to disable processing of MVG, HTTPS, HTTP, URL, FTP, EPHEMERAL, MSL, LABEL, TEXT,
SHOW, WIN and PLT commands within image files, simply add the following lines:

<policy domain="coder" rights="none" pattern="EPHEMERAL" />
<policy domain="coder" rights="none" pattern="HTTPS" />
<policy domain="coder" rights="none" pattern="HTTP" />
<policy domain="coder" rights="none" pattern="URL" />
<policy domain="coder" rights="none" pattern="FTP" />
<policy domain="coder" rights="none" pattern="MVG" />
<policy domain="coder" rights="none" pattern="MSL" />
<policy domain="coder" rights="none" pattern="TEXT" />
<policy domain="coder" rights="none" pattern="LABEL" />
<policy domain="coder" rights="none" pattern="SHOW" />
<policy domain="coder" rights="none" pattern="WIN" />
<policy domain="coder" rights="none" pattern="PLT" />
<policy domain="path" rights="none" pattern="@*" />

within the policy map stanza:

<policymap>
...
</policymap>


Red Hat Enterprise Linux 5
==========================

In the following folders:
/usr/lib64/ImageMagick-6.2.8/modules-Q16/coders/ (64bit package)
or
/usr/lib/ImageMagick-6.2.8/modules-Q16/coders/ (32bit package)

Rename the following files:
* mvg.so to mvg.so.bak
* msl.so to msl.so.bak
* label.so to label.so.bak

Comment 3 Stefan Cornelius 2016-05-03 11:28:03 EDT

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1332634]

Comment 4 Stefan Cornelius 2016-05-03 11:28:10 EDT

Public via: https://www.imagemagick.org/discourse-server/viewtopic.php?f=4&t=29588#p132726

Comment 9 Peter Bex 2016-05-07 09:47:22 EDT

Please note that the ImageMagick package does not mark the policy.xml file as a configuration file, which means any changes you make are dropped on an upgrade or reinstall!  See also [bug 1334045]

Comment 10 errata-xmlrpc 2016-05-09 14:04:30 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2016:0726 https://rhn.redhat.com/errata/RHSA-2016-0726.html

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