CVE Published: 21/09/2023 |
CVE Updated: 24/09/2024 |
CVE Year: 2023 Source: ASRG |
Vendor: LF-Edge, Zededa |
Product: EVE OS Status : PUBLISHED
CVE-2023-43637 Description
Due to the implementation of "deriveVaultKey", prior to version 7.10, the generated vault key
would always have the last 16 bytes predetermined to be "arfoobarfoobarfo".
This issue happens because "deriveVaultKey" calls "retrieveCloudKey" (which will always
return "foobarfoobarfoobarfoobarfoobarfo" as the key), and then merges the 32byte
randomly generated key with this key (by takeing 16bytes from each, see "mergeKeys").
This makes the key a lot weaker.
This issue does not persist in devices that were initialized on/after version 7.10, but devices
that were initialized before that and updated to a newer version still have this issue.
Roll an update that enforces the full 32bytes key usage.
Metrics
CVSS Version: 3.1 |
Base Score: 7.8 HIGH Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
l➤ Exploitability Metrics: Attack Vector (AV)* LOCAL Attack Complexity (AC)* HIGH Privileges Required (PR)* LOW User Interaction (UI)* NONE Scope (S)* CHANGED
l➤ Impact Metrics: Confidentiality Impact (C)* HIGH Integrity Impact (I)* HIGH Availability Impact (A)* HIGH
Weakness Enumeration (CWE)
CWE-ID: CWE-321 CWE Name: CWE-321 Use of Hard-coded Cryptographic Key Source: LF-Edge, Zededa
Common Attack Pattern Enumeration and Classification (CAPEC)