Description
A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2017-16872 | A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device. |
References
History
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Rockwellautomation
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1763-l16awa Series A
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1763-l16awa Series B
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1763-l16bbb Series A
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1763-l16bbb Series B
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1763-l16bwa Series A
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1763-l16bwa Series B
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1763-l16dwd Series A
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1763-l16dwd Series B
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1766-l32awa Series A
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1766-l32awa Series B
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1766-l32awaa Series A
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1766-l32awaa Series B
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1766-l32bwa Series A
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1766-l32bwa Series B
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1766-l32bwaa Series A
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1766-l32bwaa Series B
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1766-l32bxb Series A
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1766-l32bxb Series B
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1766-l32bxba Series A
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1766-l32bxba Series B
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Ab Micrologix Controller
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Status: PUBLISHED
Assigner: icscert
Published:
Updated: 2024-08-05T16:19:29.159Z
Reserved: 2017-04-18T00:00:00.000Z
Link: CVE-2017-7901
No data.
Status : Deferred
Published: 2017-06-30T03:29:00.797
Modified: 2025-04-20T01:37:25.860
Link: CVE-2017-7901
No data.
OpenCVE Enrichment
No data.
EUVD