PT-2021-10471 · Yccms · Yccms

Published 2021-02-01 · Updated 2024-02-14 · CVE-2020-20287

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: yccms version 3.3

Description: The issue is related to an unrestricted file upload vulnerability. It is caused by the xhUp function's improper judgment of the request parameters, which can trigger remote code execution.

Recommendations: For yccms version 3.3, consider disabling the xhUp function as a temporary workaround until a patch is available. Restrict access to file upload functionality to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2020-20287

Affected Products

Yccms

References · 6

• 🔥 https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image · Exploit
• https://osv.dev/vulnerability/CVE-2020-20287 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-20287 · Security Note
• http://yccms.net · Note
• https://t.me/cibsecurity/22912 · Telegram Post
• https://t.me/cvenotify/9421 · Telegram Post