Vulnerability identifier: #VU90986

Vulnerability risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2024-36845

CWE-ID: CWE-763

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libmodbus
Universal components / Libraries / Libraries used by multiple products

Vendor: libmodbus.org

Description

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

The vulnerability exists due to invalid pointer in the modbus_receive() function. A remote authenticated attacker can send a specially crafted message to the unit-test-server and cause a denial of service condition in the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libmodbus: 3.1.6

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External links
http://github.com/stephane/libmodbus/issues/750

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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.