CVE-2018-6383

June 8, 2021

Monstra CMS through 3.0.4 has an incomplete “forbidden types” list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.

Summary:

Monstra CMS through 3.0.4 has an incomplete “forbidden types” list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.

Reference Links(if available):

  • https://github.com/monstra-cms/monstra/issues/429
  • http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.html

  • CVSS Score (if available)

    v2: / MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

    v3: / HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

    Links to Exploits(if available)

  • https://github.com/offensive-security/exploitdb/blob/master/exploits/php/webapps/49949.py

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