SB2023071512 - Multiple vulnerabilities in Rockwell Automation ControlLogix EtherNet/IP (ENIP) communication modules

Description

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write (CVE-ID: CVE-2023-3595)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing CIP messages. A remote attacker can send specially crafted CIP messages to ports 44818/TCP or 2222/UDP, trigger an out-of-bounds write and execute arbitrary code.

Note, the vulnerability is most likely being exploited in the wild.

2) Out-of-bounds write (CVE-ID: CVE-2023-3596)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to a boundary error when processing CIP messages. A remote attacker can send specially crafted CIP messages to the affected system, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1140010
• https://www.bleepingcomputer.com/news/security/rockwell-warns-of-new-apt-rce-exploit-targeting-critical-infrastructure/
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-193-01