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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2017-6030

Schneider Electric Modicon PLCs Predictable Value Range from Previous Values

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Status
Published
Published
Updated
Assigning organization
icscert

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Schneider Electric Modicon M221

Default version status: unaffected

  • 0 to < 1.5.0.0affected

Schneider Electric Modicon M241

Default version status: unaffected

  • 0 to < 4.0.5.11affected

Schneider Electric Modicon M251

Default version status: unaffected

  • 0 to < 4.0.5.11affected

References