brizy brizy-page_builder 对路径名的限制不恰当（路径遍历）

CVE编号

CVE-2021-38346

利用情况

暂无

补丁情况

N/A

披露时间

2021-10-15

漏洞描述

The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with "../" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations.

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
https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page...

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	brizy	brizy-page_builder	*		Up to (including) 2.3.11

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-22 对路径名的限制不恰当（路径遍历） CWE-434 危险类型文件的不加限制上传 CWE-79 在Web页面生成时对输入的转义处理不恰当（跨站脚本）