CVE-2023-40261: vynamic security — Exploit & Fix

Description

Diebold Nixdorf Vynamic Security Suite (VSS) before 3.3.0 SR17, 4.0.0 SR07, 4.1.0 SR04, 4.2.0 SR04, and 4.3.0 SR02 fails to validate file attributes during the Pre-Boot Authorization (PBA) process. This can be exploited by a physical attacker who is able to manipulate the contents of the system's hard disk.

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CVSS v3.1 Score

6.8

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-665 CWE-665

Affected Products

Vendor	Product	Versions
dieboldnixdorf	vynamic_security_suite	< 3.3.0sr17
dieboldnixdorf	vynamic_security_suite	4.0.0 — 4.0.0sr07
dieboldnixdorf	vynamic_security_suite	4.1.0 — 4.1.0sr04
dieboldnixdorf	vynamic_security_suite	4.2.0 — 4.2.0sr04
dieboldnixdorf	vynamic_security_suite	4.3.0 — 4.3.0sr03

References

Advisories & Patches

https://www.dieboldnixdorf.com/en-us/banking/portfolio/software/security/

Exploits

https://media.defcon.org/DEF%20CON%2032/DEF%20CON%2032%20presentations/DEF%20CON%2032%20-%20Matt%20Burch%20-%20Where%E2%80%99s%20the%20Money%20-%20Defeating%20ATM%20Disk%20Encryption-white%20paper.pdf

Frequently Asked Questions

What is CVE-2023-40261? +

Diebold Nixdorf Vynamic Security Suite (VSS) before 3.3.0 SR17, 4.0.0 SR07, 4.1.0 SR04, 4.2.0 SR04, and 4.3.0 SR02 fails to validate file attributes during the Pre-Boot Authorization (PBA) process. This can be exploited by a physical attacker who is able to manipulate the contents of the system's hard disk. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2023-40261? +

CVE-2023-40261 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-40261? +

CVE-2023-40261 affects products from dieboldnixdorf, specifically: vynamic_security_suite. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-40261? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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