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Apache Solr - Host Environment Variables Leak via Metrics API

ID: CVE-2023-50290

Severity: medium

Author: Banana69,DhiyaneshDK

Tags: cve,cve2023,apache,solr,exposure

Description

Section titled “Description”

Exposure of Sensitive Information to an Unauthorized Actor Vulnerability in Apache Solr.The Solr Metrics API publishes all unprotected environment variables available to each Apache Solr instance. Users can specify which environment variables to hide, however, the default list is designed to work for known secret Java system properties. Environment variables cannot be strictly defined in Solr, like Java system properties can be, and may be set for the entire host,unlike Java system properties which are set per-Java-proccess.

YAML Source

Section titled “YAML Source”
id: CVE-2023-50290


info:
  name: Apache Solr - Host Environment Variables Leak via Metrics API
  author: Banana69,DhiyaneshDK
  severity: medium
  description: |
    Exposure of Sensitive Information to an Unauthorized Actor Vulnerability in Apache Solr.
    The Solr Metrics API publishes all unprotected environment variables available to each Apache Solr instance. Users can specify which environment variables to hide, however, the default list is designed to work for known secret Java system properties. Environment variables cannot be strictly defined in Solr, like Java system properties can be, and may be set for the entire host,unlike Java system properties which are set per-Java-proccess.
  impact: |
    This vulnerability can lead to the exposure of sensitive information, potentially allowing an attacker to gain unauthorized access or perform further attacks.
  remediation: Users are recommended to upgrade to version 9.3.0 or later, in which environment variables are not published via the Metrics API.
  reference:
    - https://solr.apache.org/security.html#cve-2023-50290-apache-solr-allows-read-access-to-host-environment-variables
    - https://x.com/sirifu4k1/status/1746755165066236216?s=20
    - https://nvd.nist.gov/vuln/detail/CVE-2023-50290
    - https://github.com/wy876/POC
    - https://github.com/wy876/wiki
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2023-50290
    cwe-id: CWE-200,NVD-CWE-noinfo
    epss-score: 0.05452
    epss-percentile: 0.93157
    cpe: cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: apache
    product: solr
    shodan-query:
      - "title:\"Apache Solr\""
      - http.title:"apache solr"
      - cpe:"cpe:2.3:a:apache:solr"
      - http.title:"solr admin"
    fofa-query:
      - title="solr admin"
      - title="apache solr"
    google-query:
      - intitle:"apache solr"
      - intitle:"solr admin"
  tags: cve,cve2023,apache,solr,exposure


http:
  - method: GET
    path:
      - "{{BaseURL}}/solr/admin/metrics"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"responseHeader":'
          - '"solr.jetty":'
          - 'system.env'
        condition: and


      - type: word
        part: header
        words:
          - 'application/json'


      - type: status
        status:
          - 200
# digest: 490a0046304402201a8ef6d427f448ea19ccb790a0420fb7ca141886f9640864e5b8e6bfa57a373b0220108088ecb6f688d1868e9e88fd7f6660f8c34743dcce5f9dd1955d426a448a2d: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/2023/CVE-2023-50290.yaml"

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