Infinite loop in Rockwell Automation products - CVE-2020-6998
Published: March 3, 2021
Vulnerability identifier: #VU51180
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-6998
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Rockwell Automation
Affected software:
Allen-Bradley Armor Compact GuardLogix 5370
Armor GuardLogix Safety Controllers
Allen-Bradley CompactLogix 5370 L1
Allen-Bradley CompactLogix 5370 L2
Allen-Bradley CompactLogix 5370 L3
Allen-Bradley Compact GuardLogix 5370
ControlLogix 5570 controllers
Allen-Bradley Armor Compact GuardLogix 5370
Armor GuardLogix Safety Controllers
Allen-Bradley CompactLogix 5370 L1
Allen-Bradley CompactLogix 5370 L2
Allen-Bradley CompactLogix 5370 L3
Allen-Bradley Compact GuardLogix 5370
ControlLogix 5570 controllers
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the connection establishment algorithm does not sufficiently manage its control flow during execution. A remote attacker can send a specially crafted CIP packet and cause denial of service conditions.
How to mitigate CVE-2020-6998
Install update from vendor's website.