CVE-2023-25000 Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations

2023-03-3000:17:46

CWE-208

HashiCorp

www.cve.org

cache-timing attacks

side channel

shamir's secret sharing

hashicorp vault

vulnerability

fixed versions

5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5.2 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

HashiCorp Vault’s implementation of Shamir’s secret sharing used precomputed table lookups, and was vulnerable to cache-timing attacks. An attacker with access to, and the ability to observe a large number of unseal operations on the host through a side channel may reduce the search space of a brute force effort to recover the Shamir shares. Fixed in Vault 1.13.1, 1.12.5, and 1.11.9.

CNA Affected

[
  {
    "vendor": "HashiCorp",
    "product": "Vault",
    "platforms": [
      "Windows",
      "MacOS",
      "Linux",
      "x86",
      "ARM",
      "64 bit",
      "32 bit"
    ],
    "repo": "https://github.com/hashicorp/vault",
    "versions": [
      {
        "status": "affected",
        "version": "1.13.0",
        "lessThan": "1.13.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "1.12.0",
        "lessThan": "1.12.5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "1.11.0",
        "lessThan": "1.11.9",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.11.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "HashiCorp",
    "product": "Vault Enterprise",
    "platforms": [
      "Windows",
      "MacOS",
      "Linux",
      "x86",
      "ARM",
      "64 bit",
      "32 bit"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "1.13.0",
        "lessThan": "1.13.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "1.12.0",
        "lessThan": "1.12.5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "1.11.0",
        "lessThan": "1.11.9",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.11.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]