#VU82117 Division by zero in ImageMagick - CVE-2021-40211

Vulnerability identifier: #VU82117

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-40211

CWE-ID: CWE-369

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 perform a denial of service attack.

The vulnerability exists due to a division by zero error within the ReadEnhMetaFile() function in coders/emf.c. A remote attacker can pass specially crafted data to the application and crash it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: before 7.1.0-5, 7.1.0-5

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External links
https://github.com/ImageMagick/ImageMagick/issues/4097

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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.