CVE-2018-18830 Information

Description

An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status you can use this interface to upload files without setting a cookie. First start an upload of JSP code with a .png filename and then intercept the data packet. In the name parameter change the suffix to jsp. In the response the server returns the storage path of the file which can be accessed to execute arbitrary JSP code.

CVSS Vector

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

Reference

https://gitee.com/mingSoft/MCMS/issues/IO0IQ

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8