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.
                
            Metrics
Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: icscert
Published: 2017-06-30T02:35:00
Updated: 2024-08-05T15:18:49.582Z
Reserved: 2017-02-16T00:00:00
Link: CVE-2017-6030
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Deferred
Published: 2017-06-30T03:29:00.390
Modified: 2025-04-20T01:37:25.860
Link: CVE-2017-6030
 Redhat
                        Redhat
                    No data.