Out-of-bounds read in ImageMagick

1) Out-of-bounds read

EUVDB-ID: #VU32212

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6491

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

Buffer overflow in the Get8BIMProperty function in MagickCore/property.c in ImageMagick before 6.9.5-4 and 7.x before 7.0.2-6 allows remote attackers to cause a denial of service (out-of-bounds read, memory leak, and crash) via a crafted image.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ImageMagick: 6.9.0-0 - 7.0.2-5

External links

http://www.openwall.com/lists/oss-security/2016/07/28/13
http://www.openwall.com/lists/oss-security/2016/07/28/15
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/92186
http://www.securitytracker.com/id/1036501
http://github.com/ImageMagick/ImageMagick/blob/6.9.5-4/ChangeLog
http://github.com/ImageMagick/ImageMagick/commit/dd84447b63a71fa8c3f47071b09454efc667767b
http://security.gentoo.org/glsa/201611-21

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.