CVE-2018-18830 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mingsoft	Mcms	4.6.5

Related Weaknesses (CWE)

CWE-434

References

https://gitee.com/mingSoft/MCMS/issues/IO0IQThird Party Advisory
https://gitee.com/mingSoft/MCMS/issues/IO0IQThird Party Advisory

FAQ

What is CVE-2018-18830?

CVE-2018-18830 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 wit...

How severe is CVE-2018-18830?

CVE-2018-18830 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-18830?

Check the references section above for vendor advisories and patch information. Affected products include: Mingsoft Mcms.