better_errors_project better_errors 跨站请求伪造（csrf）

CVE编号

CVE-2021-39197

利用情况

暂无

补丁情况

N/A

披露时间

2021-09-08

漏洞描述

better_errors is an open source replacement for the standard Rails error page with more information rich error pages. It is also usable outside of Rails in any Rack app as Rack middleware. better_errors prior to 2.8.0 did not implement CSRF protection for its internal requests. It also did not enforce the correct "Content-Type" header for these requests, which allowed a cross-origin "simple request" to be made without CORS protection. These together left an application with better_errors enabled open to cross-origin attacks. As a developer tool, better_errors documentation strongly recommends addition only to the `development` bundle group, so this vulnerability should only affect development environments. Please ensure that your project limits better_errors to the `development` group (or the non-Rails equivalent). Starting with release 2.8.x, CSRF protection is enforced. It is recommended that you upgrade to the latest release, or minimally to "~> 2.8.3". There are no known workarounds to mitigate the risk of using older releases of better_errors.

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://github.com/BetterErrors/better_errors/commit/8e8e796bfbde4aa088741823...
https://github.com/BetterErrors/better_errors/discussions/507
https://github.com/BetterErrors/better_errors/pull/474
https://github.com/BetterErrors/better_errors/security/advisories/GHSA-w3j4-76qw-wwjm

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	better_errors_project	better_errors	*		Up to (excluding) 2.8.0

CVSS3评分 6.3

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

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CWE-ID 漏洞类型 CWE-352 跨站请求伪造（CSRF）