cve-2021-43297-poc's Introduction

CVE-2021-43297

CVE-2021-43297的poc

漏洞描述

Dubbo Hessian-Lite 3.2.11及之前版本中存在潜在RCE攻击风险。Hessian-Lite在遇到序列化异常时会输出相关信息，这可能导致触发某些恶意定制的Bean的toString方法，从而引发RCE攻击。

影响范围

使用Dubbo 2.6.0到2.6.11的所有用户。
使用Dubbo 2.7.0到2.7.14的所有用户。
使用Dubbo 3.0.0到3.0.4的所有用户

安全建议

请根据您使用的Dubbo版本，升级到指定版本。

使用Dubbo 2.6.x的用户，请升级到2.6.12。
使用Dubbo 2.7.x的用户，请升级到2.7.15。
使用Dubbo 3.0.x的用户，请升级到3.0.5

原理

原理见先知文章（发布后回来修改）

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