CVE-2023-43637

Vault Key Partially Predetermined

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.

Categories

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory asrg.io
Affected: LF-Edge, Zededa EVE OS
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-43637?
CVE-2023-43637 has been scored as a high severity vulnerability.
How to fix CVE-2023-43637?
To fix CVE-2023-43637, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-43637 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-43637 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-43637?
CVE-2023-43637 affects LF-Edge, Zededa EVE OS.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.