PT-2024-4263 · Rockwell Automation · 1756-En4+3

Published 2024-06-11 · Updated 2024-06-17 · CVE-2024-5659

Positive Technologies (AI Summary)

CVSS v4.0

8.3

High

Base vector

AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Name of the Vulnerable Software and Affected Versions Rockwell Automation CompactLogix, ControlLogix, GuardLogix versions (affected versions not specified) Rockwell Automation communication module 1756-EN4 versions (affected versions not specified)

Description The issue is related to the implementation of incorrect control flow in the firmware of Rockwell Automation programmable logic controllers. This could allow a remote attacker to cause a denial of service. The vulnerability can be exploited by sending abnormal packets to the mDNS port, resulting in a major nonrecoverable fault (MNRF/Assert) that compromises the availability of the device.

Recommendations For Rockwell Automation CompactLogix, ControlLogix, GuardLogix, and communication module 1756-EN4, consider restricting access to the mDNS port to minimize the risk of exploitation until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-670

Related Identifiers

BDU:2024-04750

CVE-2024-5659

Affected Products

1756-En4

Compactlogix

Controllogix

Guardlogix

References · 7

• https://osv.dev/vulnerability/CVE-2024-5659 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-5659 · Security Note
• https://bdu.fstec.ru/vul/2024-04750 · Security Note
• https://t.me/cvenotify/83309 · Telegram Post
• https://twitter.com/CVEnew/status/1801673778835165430 · Twitter Post
• https://cisa.gov/news-events/ics-advisories/icsa-24-163-01 · Note
• https://rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1673.html · Note