#VU32208 NULL pointer dereference in ImageMagick - CVE-2016-5690

Vulnerability identifier: #VU32208

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-5690

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ImageMagick
Client/Desktop applications / Multimedia software

Vendor: ImageMagick.org

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The ReadDCMImage function in DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact via vectors involving the for statement in computing the pixel scaling table.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: 6.9.0-0 - 6.9.0-10, 6.9.1-0 - 6.9.1-10, 6.9.2-0 - 6.9.2-10, 6.9.3-0 - 6.9.3-10, 6.9.4-0 - 6.9.4-9, 6.9.5-0 - 6.9.5-8, 6.9.6-2 - 6.9.6.6, 6.9.7 - 6.9.7-10, 6.9.8-10, 6.9.9-0, 7.0.0-0, 7.0.1-0 - 7.0.1-6

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External links
https://www.openwall.com/lists/oss-security/2016/06/14/5
https://www.openwall.com/lists/oss-security/2016/06/17/3
https://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
https://www.securityfocus.com/bid/91283
https://blog.fuzzing-project.org/46-Various-invalid-memory-reads-in-ImageMagick-WPG,-DDS,-DCM.html
https://github.com/ImageMagick/ImageMagick/blob/6.9.4-5/ChangeLog
https://github.com/ImageMagick/ImageMagick/blob/7.0.1-7/ChangeLog
https://github.com/ImageMagick/ImageMagick/commit/5511ef530576ed18fd636baa3bb4eda3d667665d

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.