Vulnerability-Lookup

GHSA-WC42-FCJP-V8VQ

Vulnerability from github – Published: 2026-02-04 21:38 – Updated: 2026-02-04 21:38

Summary

EVE Doesn't Protect Config Partition with Measured Boot

Details

Impact

Config partition measurement was moved from PCR 13 to PCR 14 in a commit, but PCR 14 was not added to the list of PCRs that seal/unseal the vault key. As a result, an attacker can remove the disk, use another server to modify the files in the config partition, and then re-insert the disk.

Patches

Fixed in EVE version 9.4.3-lts

Workarounds

None (apart from preventing physical access to the device)

Resources

https://help.zededa.com/hc/en-us/articles/43295940828827-TPM-PCR-Index-Security-Implications https://github.com/lf-edge/eve/commit/d9383a7ee4e1c39f5c8c6d4a63cb2ebd00695e8a

Severity

5.9 (Medium)


                  
                    CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/lf-edge/eve"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20230519072751-977f42b07fa9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43634"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-522",
      "CWE-922"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-04T21:38:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nConfig partition measurement was moved from PCR 13 to PCR 14 in a commit, but PCR 14 was not added to the list of PCRs that seal/unseal the vault key. As a result, an attacker can remove the disk, use another server to modify the files in the config partition, and then re-insert the disk.\n\n### Patches\n\nFixed in EVE version 9.4.3-lts\n\n### Workarounds\n\nNone (apart from preventing physical access to the device)\n\n### Resources\n\nhttps://help.zededa.com/hc/en-us/articles/43295940828827-TPM-PCR-Index-Security-Implications\nhttps://github.com/lf-edge/eve/commit/d9383a7ee4e1c39f5c8c6d4a63cb2ebd00695e8a",
  "id": "GHSA-wc42-fcjp-v8vq",
  "modified": "2026-02-04T21:38:32Z",
  "published": "2026-02-04T21:38:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lf-edge/eve/security/advisories/GHSA-wc42-fcjp-v8vq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43634"
    },
    {
      "type": "WEB",
      "url": "https://asrg.io/security-advisories/config-partition-not-protected-by-measured-boot"
    },
    {
      "type": "WEB",
      "url": "https://asrg.io/security-advisories/cve-2023-43634"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lf-edge/eve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "EVE Doesn\u0027t Protect Config Partition with Measured Boot"
}

CVE-2023-43634 (GCVE-0-2023-43634)

Vulnerability from cvelistv5 – Published: 2023-09-21 13:05 – Updated: 2024-09-24 16:54

Title

Config Partition Not Protected by Measured Boot

Summary

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 partition measurement moved from PCR 13 to PCR 14, but PCR 14 was not added to the list of PCRs that seal/unseal the key. This change makes the measurement of PCR 14 effectively redundant as it would not affect the sealing/unsealing of the key. An attacker could modify the config partition without triggering the measured boot, this could result in the attacker gaining full control over the device with full access to the contents of the encrypted “vault”

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-24 16:48 UTC

CWE

CWE-522 - Insufficiently Protected Credentials
CWE-922 - Insecure Storage of Sensitive Information

Assigner

ASRG CNA under the icscert root

CNA scorecard – unranked: 8 records in the last 180 days, 10 needed details

References

1 reference

URL	Tags
https://asrg.io/security-advisories/cve-2023-43634/

Impacted products

2 products

Vendor	Product	Version
LF-Edge, Zededa	EVE OS	Affected: 0 , < 8.6.0 (release) Affected: 9.0.0 , < 9.5.0 (release)
lfedge	eve	Affected: 0 , < 8.6.0 (custom) Affected: 9.0.0 , < 9.5.0 (custom) cpe:2.3:o:lfedge:eve::::::::

Credits

Ilay Levi

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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