Podatność CVE-2017-7901


Publikacja: 2017-06-29   Modyfikacja: 2017-06-30

Opis:
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.

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:C)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
9/10
8.5/10
10/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Zdalny
Niska
Nie wymagana
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Częściowy
Częściowy
Pełny
Affected software
Rockwellautomation -> 1766-l32bwa series b 
Rockwellautomation -> 1766-l32bxba series b 
Rockwellautomation -> 1763-l16bwa series b 
Rockwellautomation -> 1766-l32bwaa series a 
Rockwellautomation -> 1766-l32bwa series a 
Rockwellautomation -> 1763-l16dwd series b 
Rockwellautomation -> 1763-l16bwa series a 
Rockwellautomation -> 1763-l16dwd series a 
Rockwellautomation -> 1766-l32awa series b 
Rockwellautomation -> 1766-l32awaa series a 
Rockwellautomation -> 1763-l16bbb series a 
Rockwellautomation -> 1766-l32awaa series b 
Rockwellautomation -> 1763-l16awa series a 
Rockwellautomation -> 1763-l16awa series b 
Rockwellautomation -> 1763-l16bbb series b 
Rockwellautomation -> 1766-l32bwaa series b 
Rockwellautomation -> 1766-l32bxb series b 
Rockwellautomation -> 1766-l32awa series a 
Rockwellautomation -> 1766-l32bxba series a 
Rockwellautomation -> 1766-l32bxb series a 

 Referencje:
http://www.securitytracker.com/id/1038546
https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04

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