CVE-2023-43637: Due to the implementation of "deriveVaultKey", prior to version 7.10, the generated vault key would always ha

Q: How do I fix CVE-2023-43637?

eve: upgrade to 7.10. Exact commands for each OS are on this page.

Q: Is CVE-2023-43637 being exploited?

CVE-2023-43637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-43637 affect?

CVE-2023-43637 affects eve. Severity is high (CVSS 7.8). 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"

Routine

HIGH 7.8UPGRADE

CVE-2023-43637 is a high-severity flaw (CVSS 7.8) affecting eve. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-321, CWE-798
Published	2023-09-21
Last modified	2026-06-17

Publisher (CNA): Automotive Security Research Group (ASRG) · Vendor: lfedge

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-21 14:15 UTCPublished CVE record published
2026-06-17 06:26 UTCUpdated Record last modified

lfedge eve UPGRADE

Affected: < 7.10

Fixed in: 7.10

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-43637?

eve: upgrade to 7.10. Exact commands for each OS are on this page.

Is CVE-2023-43637 being exploited?

CVE-2023-43637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-43637 affect?

CVE-2023-43637 affects eve. Severity is high (CVSS 7.8). 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"

How urgent is CVE-2023-43637?

Priority 28/100. High severity

Software pages

HashiCorp Vault vulnerabilities

Related CVEs

CVE-2023-43634 HIGH 8.8 UPGRADE When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a prev
CVE-2023-43633 HIGH 8.8 UPGRADE On boot, the Pillar eve container checks for the existence and content of “/config/GlobalConfig/global.json”.
CVE-2018-8097 CRITICAL 9.8 UPGRADE io/mongo/parser.py in Eve (aka pyeve) before 0.7.5 allows remote attackers to execute arbitrary code via Code

References

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