Vulnerability identifier: #VU49569

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-12514

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IO-Link Master
Hardware solutions / Firmware
IO-Link Master DR-8-PNIO-T
Hardware solutions / Firmware
IO-Link Master DR-8-PNIO-P
Hardware solutions / Firmware
IO-Link Master DR-8-PNIO
Hardware solutions / Firmware
IO-Link Master 8-PNIO-L
Hardware solutions / Firmware
IO-Link Master 8-PNIO
Hardware solutions / Firmware
IO-Link Master 4-PNIO
Hardware solutions / Firmware
IO-Link Master DR-8-EIP-T
Hardware solutions / Firmware
IO-Link Master DR-8-EIP-P
Hardware solutions / Firmware
IO-Link Master 8-EIP-L
Hardware solutions / Firmware
IO-Link Master 8-EIP
Hardware solutions / Firmware
IO-Link Master 4-EIP
Hardware solutions / Firmware

Vendor: PEPPERL+FUCHS

Description

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

The vulnerability exists due to a NULL pointer dereference error in strlen. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

IO-Link Master: 1.5.28

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External links
http://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-pepperl-fuchs-io-link-master-series/

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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. However, proof of concept for this vulnerability is available.