CVE-2018-6383

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.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

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

EPSS

13.50% chance of exploitation in the next 30 days, 96th percentile

Published

2018-01-29

Updated

2024-08-05

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.html
• Hacker5preme/Exploits/tree/main/CVE-2018-6383-Exploit

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49949

References

• CVE Record
• NVD entry

Related

• CVE-2017-14535
• CVE-2017-14537
• CVE-2017-9380
• CVE-2018-15139
• CVE-2018-15152
• CVE-2018-19423