flexdotnetcms_project flexdotnetcms 危险类型文件的不加限制上传

CVE编号

CVE-2020-27386

利用情况

暂无

补丁情况

N/A

披露时间

2020-11-13

漏洞描述

An unrestricted file upload issue in FlexDotnetCMS before v1.5.9 allows an authenticated remote attacker to upload and execute arbitrary files by using the FileManager to upload malicious code (e.g., ASP code) in the form of a safe file type (e.g., a TXT file), and then using the FileEditor (in v1.5.8 and prior) or the FileManager's rename function (in v1.5.7 and prior) to rename the file to an executable extension (e.g., ASP), and finally executing the file via an HTTP GET request to /<path_to_file>.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
http://packetstormsecurity.com/files/160411/FlexDotnetCMS-1.5.8-Arbitrary-ASP...
https://blog.vonahi.io/whats-in-a-re-name/
https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.9
https://github.com/rapid7/metasploit-framework/pull/14339

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	flexdotnetcms_project	flexdotnetcms	*		Up to (excluding) 1.5.9

CVSS3评分 8.8

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 低
• 影响范围 未更改
• 用户交互 无
• 可用性 高
• 保密性 高
• 完整性 高

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

CWE-ID	漏洞类型
CWE-434	危险类型文件的不加限制上传

Exp相关链接

• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/flexdotnetcms_upload_exec.rb

- avd.aliyun.com