Use of Insufficiently Random Values

CVE-2020-27634

High

9.1/10

Summary

In Contiki 4.5, TCP ISNs are improperly random.

Attack Complexity: LOW
Attack Vector: NETWORK
Integrity Impact: HIGH
Scope: UNCHANGED
User Interaction: NONE
Privileges Required: NONE
Confidentiality Impact: HIGH
Availability Impact: NONE

CWE-330 - Use of Insufficiently Random Values

The software uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

References

Advisory Timeline

Published Oct 10, 2023