CVE-2020-20287 — CRITICAL (9.8)

Vulnerability Description

Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.

CVSS Score

9.8

CRITICAL

CVSS:3.1/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
Yccms	Yccms	3.3

Related Weaknesses (CWE)

CWE-434

References

http://www.yccms.net/Broken LinkURL Repurposed
https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/ExploitThird Party Advisory
http://www.yccms.net/Broken LinkURL Repurposed
https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/ExploitThird Party Advisory

FAQ

What is CVE-2020-20287?

CVE-2020-20287 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.

How severe is CVE-2020-20287?

CVE-2020-20287 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-2020-20287?

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