Bug 1622738 – CVE-2018-15607 ImageMagick: CPU Exhaustion via crafted input file

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Bug 1622738 - (CVE-2018-15607) CVE-2018-15607 ImageMagick: CPU Exhaustion via crafted input file

Summary:	CVE-2018-15607 ImageMagick: CPU Exhaustion via crafted input file

Status:	NEW

Aliases:	CVE-2018-15607

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

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=low,public=20180821,reported=2...
Keywords:	Security

Depends On:	1622739 1622740 1633141
Blocks:	1622741
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Reported:	2018-08-27 18:32 EDT by Laura Pardo
Modified:	2018-09-26 10:14 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	ImageMagick 6.9.10-12, ImageMagick 7.0.8-12
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Description Laura Pardo 2018-08-27 18:32:13 EDT

A flaw was found in ImageMagick 7.0.8-11 Q16, a tiny input file 0x50 0x36 0x36 0x36 0x36 0x4c 0x36 0x38 0x36 0x36 0x36 0x36 0x36 0x36 0x1f 0x35 0x50 0x00 can result in a hang of several minutes during which CPU and memory resources are consumed until ultimately an attempted large memory allocation fails. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.


References:
https://github.com/ImageMagick/ImageMagick/issues/1255

Comment 1 Laura Pardo 2018-08-27 18:32:41 EDT

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1622739]

Comment 3 Adam Mariš 2018-09-14 03:57:48 EDT

Upstream patches:

master: https://github.com/ImageMagick/ImageMagick/commit/23acdce3651447328c6ef71ede20ee60637ba39d
ImageMagick 6: https://github.com/ImageMagick/ImageMagick6/commit/d5e7c2b5ba384e7d0d8ddac6c9ae2319cb74b9c5

Comment 6 Adam Mariš 2018-09-26 10:03:17 EDT

Mitigation:

Administrators can mitigate this issue by setting reasonable limits on size of processed image, consumed memory, time limit, etc. For example, disallowing the processing of large images (e.g. having either width or height larger than 10240 pixels) which consumes a lot of CPU time can be done by adding the following XML child elements under <policymap> element in /etc/ImageMagick/policy.xml:

```
<policy domain="resource" name="width" value="10KP"/>
<policy domain="resource" name="height" value="10KP"/>
```

Comment 7 Adam Mariš 2018-09-26 10:07:20 EDT

Statement:

This issue affects the versions of ImageMagick as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Extended Life Phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

This issue affects the versions of ImageMagick as shipped with Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Low, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

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