Vulnerability identifier: #VU7573

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6912

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GD Graphics Library
Universal components / Libraries / Libraries used by multiple products

Vendor: Boutell.Com, Inc.

Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack and potentially compromise vulnerable system.

The vulnerability exists due to double free error when processing large image width and height values in gdImageWebPtr() function in the GD Graphics Library (aka libgd). A remote attacker create a specially crafted image file, trigger double free error and crash the affected application or execute arbitrary code on the target system.

Mitigation
Update to version 2.2.4.

Vulnerable software versions

GD Graphics Library: 2.1.0 - 2.2.3

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External links
http://github.com/libgd/libgd/blob/gd-2.2.4/CHANGELOG.md

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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.