discourse discourse 在web页面生成时对输入的转义处理不恰当（跨站脚本）

CVE编号

CVE-2021-41095

利用情况

暂无

补丁情况

N/A

披露时间

2021-09-28

漏洞描述

Discourse is an open source discussion platform. There is a cross-site scripting (XSS) vulnerability in versions 2.7.7 and earlier of the `stable` branch, versions 2.8.0.beta6 and earlier of the `beta` branch, and versions 2.8.0.beta6 and earlier of the `tests-passed` branch. Rendering of some error messages that contain user input can be susceptible to XSS attacks. This vulnerability only affects sites which have blocked watched words that contain HTML tags, modified or disabled Discourse's default Content Security Policy. This issue is patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. As a workaround, avoid modifying or disabling Discourse’s default Content Security Policy, and blocking watched words containing HTML tags.

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/discourse/discourse/pull/14434/commits/40b776b9d39c41d9273...
https://github.com/discourse/discourse/security/advisories/GHSA-qvqx-2h7w-m479

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	discourse	discourse	*		Up to (including) 2.7.7
	运行在以下环境
	应用	discourse	discourse	2.8.0	-

CVSS3评分 4.2

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CWE-ID 漏洞类型 CWE-79 在Web页面生成时对输入的转义处理不恰当（跨站脚本）