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CVE-2020-6998— Rockwell Automation CompactLogix 5370 and ControlLogix 5570 Controllers Improper Input Validation

Quick assessment

Affected
Rockwell Automation Armor Compact GuardLogix 5370 controllers
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rockwell Automation CompactLogix 5370是美国罗克韦尔（Rockwell Automation）公司的一款可编程逻辑控制器。 Rockwell Automation CompactLogix 5370 and ControlLogix 5570 存在输入验证错误漏洞，该漏洞允许攻击者向控制器发送专门制作的CIP包请求，这可能导致与其他产品通信时出现拒绝服务条件。

CVSS 5.8 · Medium EPSS 3.16% · P88
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I. Basic Information for CVE-2020-6998

Vulnerability Information
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Vulnerability Title
Rockwell Automation CompactLogix 5370 and ControlLogix 5570 Controllers Improper Input Validation
Source: CVE Program / CVE List V5
Vulnerability Description
The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Rockwell Automation CompactLogix 5370 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rockwell Automation CompactLogix 5370是美国罗克韦尔（Rockwell Automation）公司的一款可编程逻辑控制器。 Rockwell Automation CompactLogix 5370 and ControlLogix 5570 存在输入验证错误漏洞，该漏洞允许攻击者向控制器发送专门制作的CIP包请求，这可能导致与其他产品通信时出现拒绝服务条件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rockwell Automation Armor Compact GuardLogix 5370 controllers unspecified ~ versions 33 and prior -
Rockwell Automation Armor GuardLogix Safety Controllers unspecified ~ versions 33 and prior -
Rockwell Automation CompactLogix 5370 L1 controllers unspecified ~ versions 33 and prior -
Rockwell Automation CompactLogix 5370 L2 controllers unspecified ~ versions 33 and prior -
Rockwell Automation CompactLogix 5370 L3 controllers unspecified ~ versions 33 and prior -
Rockwell Automation Compact GuardLogix 5370 controllers unspecified ~ versions 33 and prior -
Rockwell Automation ControlLogix 5570 controllers unspecified ~ versions 33 and prior -

II. Public POCs for CVE-2020-6998

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III. Intelligence Information for CVE-2020-6998

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Vendor Advisories for CVE-2020-6998 (1)

Other References for CVE-2020-6998 (1)

IV. Related Vulnerabilities

Same vendor: Rockwell Automation

V. Comments for CVE-2020-6998

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