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CVE-2017-6030— Schneider Electric Modicon PLCs Predictable Value Range from Previous Values

Quick assessment

Affected
Schneider Electric Modicon M221
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.

Schneider Electric Modicon PLCs Modicon M221、Modicon M241和Modicon M251都是法国施耐德电气（Schneider Electric）公司的可编程逻辑控制器产品。 多款Schneider Electric产品存在安全特征问题漏洞，该漏洞程序没有充分的随机产生TCP原始序列号。攻击者可利用该漏洞伪造或破坏TCP连接。以下产品和版本受到影响：使用1.5.0.0之前版本固件的Schneider Electric Modicon PLCs Modic

AI Predicted 5.3 Difficulty: Moderate EPSS 2.14% · P81

Affected Version Matrix 3

VendorProduct Version RangeStatus
Schneider Electric Modicon M221 < 1.5.0.0 affected
Schneider Electric Modicon M241 < 4.0.5.11 affected
Schneider Electric Modicon M251 < 4.0.5.11 affected
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I. Basic Information for CVE-2017-6030

Vulnerability Information
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Vulnerability Title
Schneider Electric Modicon PLCs Predictable Value Range from Previous Values
Source: CVE Program / CVE List V5
Vulnerability Description
A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
从先前值可预测取值范围
Source: CVE Program / CVE List V5
Vulnerability Title
多款Schneider Electric Modicon产品安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Schneider Electric Modicon PLCs Modicon M221、Modicon M241和Modicon M251都是法国施耐德电气（Schneider Electric）公司的可编程逻辑控制器产品。 多款Schneider Electric产品存在安全特征问题漏洞，该漏洞程序没有充分的随机产生TCP原始序列号。攻击者可利用该漏洞伪造或破坏TCP连接。以下产品和版本受到影响：使用1.5.0.0之前版本固件的Schneider Electric Modicon PLCs Modic
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
Schneider Electric Modicon M221 0 ~ 1.5.0.0 -
Schneider Electric Modicon M241 0 ~ 4.0.5.11 -
Schneider Electric Modicon M251 0 ~ 4.0.5.11 -

II. Public POCs for CVE-2017-6030

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III. Intelligence Information for CVE-2017-6030

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Vendor Advisories for CVE-2017-6030 (2)

Other References for CVE-2017-6030 (1)

IV. Related Vulnerabilities

Same vendor: Schneider Electric
Same weakness: CWE-343

V. Comments for CVE-2017-6030

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