#VU56789 Out-of-bounds read in libjpeg-turbo - CVE-2021-37972

Vulnerability identifier: #VU56789

Vulnerability risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-37972

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing images within the libjpeg-turbo library. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libjpeg-turbo: 2.0.0 - 2.1.1

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External links
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_21.html
https://crbug.com/1234259
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37972

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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.