Vulnerability-Lookup

GHSA-G7VP-J25F-H34P

Vulnerability from github – Published: 2026-02-04 23:21 – Updated: 2026-02-04 23:21

Summary

EVE Has Partially Predetermined Vault Key

Details

Impact

The deriveVaultKey function calls retrieveCloudKey which always returns "foobarfoobarfoobarfoobarfoobarfo". When merged with the randomly generated 32-byte key using mergeKeys (16 bytes from each), the last 16 bytes are always "arfoobarfoobarfo". This enables an attacker with physical access to the EVE-OS device to attempt to brute force the remaining 128 bits of key.

Patches

Fixed in 7.10 and 8.12.1-lts

Workarounds

None

Severity

6.7 (Medium)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/lf-edge/eve"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20220310190112-c0c966dc31e2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43637"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321",
      "CWE-798"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-04T23:21:25Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe deriveVaultKey function calls retrieveCloudKey which always returns \"foobarfoobarfoobarfoobarfoobarfo\". When merged with the randomly generated 32-byte key using mergeKeys (16 bytes from each), the last 16 bytes are always \"arfoobarfoobarfo\". This enables an attacker with physical access to the EVE-OS device to attempt to brute force the remaining 128 bits of key.\n\n### Patches\n\nFixed in 7.10 and  8.12.1-lts\n\n### Workarounds\n\nNone",
  "id": "GHSA-g7vp-j25f-h34p",
  "modified": "2026-02-04T23:21:25Z",
  "published": "2026-02-04T23:21:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lf-edge/eve/security/advisories/GHSA-g7vp-j25f-h34p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43637"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lf-edge/eve/commit/c0c966dc31e2ed9aafc155e6be646adb14756c01"
    },
    {
      "type": "WEB",
      "url": "https://asrg.io/security-advisories/cve-2023-43637"
    },
    {
      "type": "WEB",
      "url": "https://asrg.io/security-advisories/vault-key-partially-predetermined"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lf-edge/eve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "EVE Has Partially Predetermined Vault Key"
}

CVE-2023-43637 (GCVE-0-2023-43637)

Vulnerability from cvelistv5 – Published: 2023-09-21 13:20 – Updated: 2024-09-24 17:48

Title

Vault Key Partially Predetermined

Summary

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.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:H/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 17:45 UTC

CWE

CWE-321 - Use of Hard-coded Cryptographic Key

Assigner

ASRG icscert root

References

1 reference

URL	Tags
https://asrg.io/security-advisories/cve-2023-43637/

Impacted products

2 products

Vendor	Product	Version
LF-Edge, Zededa	EVE OS	Affected: 0 , < 7.10 (release)
linuxfoundation	edge_virtualization_engine	Affected: 0 , < 7.10 (custom) cpe:2.3:o:linuxfoundation:edge_virtualization_engine::::::::

Credits

Ilay Levi

Show details on NVD website

JSON

To clipboard

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        "affected": [
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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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