中危 neoan neoan3-template 不安全的继承权限
CVE编号
CVE-2021-41170利用情况
暂无补丁情况
官方补丁披露时间
2021-11-09漏洞描述
### Impact Versions prior 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. ### Patches Version 1.1.1 has addressed this vulnerability. ```php $params = [ 'reverse' => fn($input) => strrev($input), // <-- no longer possible with version ~1.1.1 'value' => 'My website' ] TemplateFunctions::registerClosure('reverse', fn($input) => strrev($input)); // <-- still possible (and nicely isolated) Template::embrace('<h1>{{reverse(value)}}</h1>', $params); ``` ### Workarounds Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade. ### References As a possible exploit is relatively easy to achieve, I will not share steps to reproduce the issue for now. ### For more information If you have any questions or comments about this advisory: * Open an issue in [our repo](https://github.com/sroehrl/neoan3-template)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。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 | neoan | neoan3-template | * | Up to (excluding) 1.1.1 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 普通权限
- 影响范围 越权影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-277 | 不安全的继承权限 |
| CWE-732 | 关键资源的不正确权限授予 |
| CWE-74 | 输出中的特殊元素转义处理不恰当（注入） |
Exp相关链接
版权声明
本站原创文章转载请注明文章出处及链接，谢谢合作！
评论