#VU54091 Division by zero in libjpeg-turbo - CVE-2021-20205

Vulnerability identifier: #VU54091

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20205

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libjpeg-turbo
Client/Desktop applications / Multimedia software

Vendor: The libjpeg-turbo Project

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to divide by zero error when processing a crafted GIF image. A remote attacker can pass specially crafted file to the application and crash it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libjpeg-turbo: 2.0.0 - 2.0.90

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1937385
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TM3AHZEYGYFEDL6AW5RLEAJNVRWEJDFL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMLEY6HLVZAGXIOGGPPUAMRJUA6LB3FD/
https://github.com/libjpeg-turbo/libjpeg-turbo/releases/tag/2.1.0

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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.