peerigon angular-expressions 输出中的特殊元素转义处理不恰当（注入）

CVE编号

CVE-2021-21277

利用情况

暂无

补丁情况

N/A

披露时间

2021-02-02

漏洞描述

angular-expressions is "angular's nicest part extracted as a standalone module for the browser and node". In angular-expressions before version 1.1.2 there is a vulnerability which allows Remote Code Execution if you call "expressions.compile(userControlledInput)" where "userControlledInput" is text that comes from user input. The security of the package could be bypassed by using a more complex payload, using a ".constructor.constructor" technique. In terms of impact: If running angular-expressions in the browser, an attacker could run any browser script when the application code calls expressions.compile(userControlledInput). If running angular-expressions on the server, an attacker could run any Javascript expression, thus gaining Remote Code Execution. This is fixed in version 1.1.2 of angular-expressions A temporary workaround might be either to disable user-controlled input that will be fed into angular-expressions in your application or allow only following characters in the userControlledInput.

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://blog.angularjs.org/2016/09/angular-16-expression-sandbox-removal.html
https://github.com/peerigon/angular-expressions/commit/07edb62902b1f6127b3dcc...
https://github.com/peerigon/angular-expressions/security/advisories/GHSA-j6px...
https://www.npmjs.com/package/angular-expressions

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	peerigon	angular-expressions	*		Up to (excluding) 1.1.2

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-74 输出中的特殊元素转义处理不恰当（注入）