#VU18391 Stack-based buffer overflow in ImageMagick - CVE-2019-9956

Vulnerability identifier: #VU18391

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2019-9956

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ImageMagick
Client/Desktop applications / Multimedia software

Vendor: ImageMagick.org

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing a crafted image file in the PopHexPixel() function of coders/ps.c. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.8-35

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External links
https://www.securityfocus.com/bid/107546
https://www.securityfocus.com/bid/107672
https://github.com/ImageMagick/ImageMagick/issues/1523
https://seclists.org/bugtraq/2019/Apr/37
https://www.debian.org/security/2019/dsa-4436

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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.