CVE-2024-36981: openplc v3 Out-of-bounds Read — Exploit

Description

An out-of-bounds read vulnerability exists in the OpenPLC Runtime EtherNet/IP PCCC parser functionality of OpenPLC_v3 b4702061dc14d1024856f71b4543298d77007b88. A specially crafted network request can lead to denial of service. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.This is the final instance of the incorrect comparison.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
openplcproject	openplc_v3_firmware	All

References

Exploits

https://talosintelligence.com/vulnerability_reports/TALOS-2024-2004

Other References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-2004

Frequently Asked Questions

What is CVE-2024-36981? +

An out-of-bounds read vulnerability exists in the OpenPLC Runtime EtherNet/IP PCCC parser functionality of OpenPLC_v3 b4702061dc14d1024856f71b4543298d77007b88. A specially crafted network request can lead to denial of service. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.This is the final instance of the incorrect comparison. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-36981? +

CVE-2024-36981 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-36981? +

CVE-2024-36981 affects products from openplcproject, specifically: openplc_v3_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-36981? +

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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