GHSA-G7VP-J25F-H34P

Vulnerability from github – Published: 2026-02-04 23:21 – Updated: 2026-02-04 23:21
VLAI?
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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{
  "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"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.