var-201706-0458
Vulnerability from variot
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. Schneider Electric Modicon PLC Modicon M221 , M241 and M251 The firmware contains a vulnerability related to lack of entropy.Information is obtained and service operation is interrupted (DoS) There is a possibility of being put into a state. Schneider-Electric Modicon M251 and others are programmable controller products from Schneider Electric. An attacker could exploit the vulnerability to obtain sensitive information or perform unauthorized actions. This may lead to other attacks
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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. Schneider Electric Modicon PLC Modicon M221 , M241 and M251 The firmware contains a vulnerability related to lack of entropy.Information is obtained and service operation is interrupted (DoS) There is a possibility of being put into a state. Schneider-Electric Modicon M251 and others are programmable controller products from Schneider Electric. An attacker could exploit the vulnerability to obtain sensitive information or perform unauthorized actions. 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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.