CVE-2023-4489: Z/IP Gateway Use of Uninitialized PRNG when Generating S0 Encryption Key
The first S0 encryption key is generated with an uninitialized PRNG in Z/IP Gateway products running Silicon Labs Z/IP Gateway SDK v7.18.3 and earlier. This makes the first S0 key generated at startup predictable, potentially allowing network key prediction and unauthorized S0 network access.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-4489?
CVE-2023-4489 is classified as high severity due to the potential for unauthorized access through predictable encryption key generation.
How do I fix CVE-2023-4489?
To fix CVE-2023-4489, upgrade to Z/IP Gateway SDK version 7.18.4 or later, which addresses the uninitialized PRNG issue.
What systems are affected by CVE-2023-4489?
CVE-2023-4489 affects Z/IP Gateway products running Silicon Labs Z/IP Gateway SDK versions up to and including 7.18.3.
What is the risk associated with CVE-2023-4489?
The risk associated with CVE-2023-4489 includes potential unauthorized access to network keys, leading to compromised networks.
Is there a patch available for CVE-2023-4489?
Yes, a patch is available by upgrading to Z/IP Gateway SDK version 7.18.4, which resolves the vulnerability.