#VU62904 Division by zero in ImageMagick - CVE-2020-27756

Vulnerability identifier: #VU62904

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-27756

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 in the ParseMetaGeometry() function in MagickCore/geometry.c. A remote attacker can pass a specially crafted data to the application and crash it.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.0-0, 7.0.1-0 - 7.0.1-10, 7.0.2-0 - 7.0.2-10, 7.0.3-0 - 7.0.3-10, 7.0.4-0 - 7.0.4-10, 7.0.5-0 - 7.0.5-10, 7.0.6 - 7.0.6-10, 7.0.7 - 7.0.7-39, 7.0.8-0 - 7.0.8-69, 7.0.9

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1894233
https://github.com/ImageMagick/ImageMagick/commit/f35eca82b0c294ff9d0ccad104a881c3ae2ba913
https://github.com/ImageMagick/ImageMagick/issues/1725

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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.