CVE-2023-43634: When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a prev

Q: How do I fix CVE-2023-43634?

eve: upgrade to 8.6.0, 9.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-43634 being exploited?

CVE-2023-43634 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-2023-43634 affect?

CVE-2023-43634 affects eve. Severity is high (CVSS 8.8). When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a previous project, CYMOTIVE found that the configuration is not protected by the secure boot, and in response Zededa implemented measur

Routine

HIGH 8.8UPGRADE

CVE-2023-43634 is a high-severity flaw (CVSS 8.8) affecting eve. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a previous project, CYMOTIVE found that the configuration is not protected by the secure boot, and in response Zededa implemented measurements on the config partition that was mapped to PCR 13. In that process, PCR 13 was added to the list of PCRs that seal/unseal the key. In commit “56e589749c6ff58ded862d39535d43253b249acf”, the config parti

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-522, CWE-922
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: < 8.6.0 · >= 9.0.0 and < 9.5.0

Fixed in: 8.6.0, 9.5.0

Safe to downgrade to: a release before 9.0.0

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-2023-43634?

eve: upgrade to 8.6.0, 9.5.0. Exact commands for each OS are on this page.

Is CVE-2023-43634 being exploited?

CVE-2023-43634 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-2023-43634 affect?

CVE-2023-43634 affects eve. Severity is high (CVSS 8.8). When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a previous project, CYMOTIVE found that the configuration is not protected by the secure boot, and in response Zededa implemented measur

How urgent is CVE-2023-43634?

Priority 32/100. High severity

Software pages

HashiCorp Vault vulnerabilities

Related CVEs

CVE-2023-43637 HIGH 7.8 UPGRADE Due to the implementation of "deriveVaultKey", prior to version 7.10, the generated vault key would always ha
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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