HashiCorp Consul/Consul Enterprise - Server-Side Request Forgery

id: CVE-2022-29153

info:
  name: HashiCorp Consul/Consul Enterprise - Server-Side Request Forgery
  author: c-sh0
  severity: high
  description: |
    HashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11 are susceptible to server-side request forgery. When redirects are returned by HTTP health check endpoints, Consul follows these HTTP redirects by default. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to send crafted requests to internal resources, leading to unauthorized access or information disclosure.
  remediation: 1) HTTP + interval health check configuration provides a disable_redirects option to prohibit this behavior. 2) Fixed in 1.9.17, 1.10.10, and 1.11.5.
  reference:
    - https://discuss.hashicorp.com/t/hcsec-2022-10-consul-s-http-health-check-may-allow-server-side-request-forgery/38393
    - https://github.com/hashicorp/consul/pull/12685
    - https://developer.hashicorp.com/consul/docs/discovery/checks
    - https://nvd.nist.gov/vuln/detail/CVE-2022-29153
    - https://discuss.hashicorp.com
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    cvss-score: 7.5
    cve-id: CVE-2022-29153
    cwe-id: CWE-918
    epss-score: 0.02376
    epss-percentile: 0.89603
    cpe: cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: hashicorp
    product: consul
    shodan-query: title:"Consul by HashiCorp"
  tags: cve,cve2022,consul,hashicorp,ssrf,intrusive

http:
  - raw:
      - | # register safe test node
        PUT /v1/agent/check/register HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"id":"{{randstr}}","name":"TEST NODE","method":"GET","http":"http://example.com","interval":"10s","timeout":"1s","disable_redirects":true}
      - | # deregister test node
        PUT /v1/agent/check/deregister/{{randstr}} HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - unknown field "disable_redirects"

      - type: status
        status:
          - 400
# digest: 4a0a00473045022100ad57775f28b340323e6c238f83d7ff7d527ca0f9ea5bad34f1516a2ced3e64c7022057c3fb9256242477b86e3a94db3ab1e5b0992646c61019b6e2eb284ae7e03696:922c64590222798bb761d5b6d8e72950