#VU33244 Use-after-free in GraphicsMagick - CVE-2017-14103

Vulnerability identifier: #VU33244

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-14103

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GraphicsMagick
Universal components / Libraries / Libraries used by multiple products

Vendor: GraphicsMagick Group

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted file, related to a ReadMNGImage out-of-order CloseBlob call. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-11403. A remote attackers can conduct use-after-free attacks.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Update to version 1.3.27.

Vulnerable software versions

GraphicsMagick: 1.3.26

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External links
https://hg.code.sf.net/p/graphicsmagick/code/rev/98721124e51f
https://blogs.gentoo.org/ago/2017/09/01/graphicsmagick-use-after-free-in-closeblob-blob-c-incomplete-fix-for-cve-2017-11403/

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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.