CVE-2024-6468 Vault Vulnerable to Denial of Service When Setting a Proxy Protocol Behavior

2024-07-1120:40:12

CWE-703

HashiCorp

github.com

vault

denial of service

proxy protocol

vulnerable

cve-2024-6468

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.8

Confidence

High

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

Vault and Vault Enterprise did not properly handle requests originating from unauthorized IP addresses when the TCP listener option, proxy_protocol_behavior, was set to deny_unauthorized. When receiving a request from a source IP address that was not listed in proxy_protocol_authorized_addrs, the Vault API server would shut down and no longer respond to any HTTP requests, potentially resulting in denial of service.

While this bug also affected versions of Vault up to 1.17.1 and 1.16.5, a separate regression in those release series did not allow Vault operators to configure the deny_unauthorized option, thus not allowing the conditions for the denial of service to occur.

Fixed in Vault and Vault Enterprise 1.17.2, 1.16.6, and 1.15.12.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:hashicorp:vault:*:*:*:*:*:*:*:*"
    ],
    "vendor": "hashicorp",
    "product": "vault",
    "versions": [
      {
        "status": "affected",
        "version": "1.10.0",
        "lessThan": "1.15.11",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "cpes": [
      "cpe:2.3:a:hashicorp:vault_enterprise:*:*:*:*:*:*:*:*"
    ],
    "vendor": "hashicorp",
    "product": "vault_enterprise",
    "versions": [
      {
        "status": "affected",
        "version": "1.10.0",
        "lessThan": "1.15.11",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]