LMXCMS 1.41 代码审计报告<\/h1>

一、环境搭建<\/h2>

下载 LMXCMS 1.41 版本：http:\/\/www.lmxcms.com\/down\/xitong\/20210530\/14.html<\/li>
使用 PHPStudy 搭建网站环境<\/li>

将代码导入 PHPStorm 或其他代码审计工具<\/li> <\/ol>

二、漏洞分析<\/h2>

1. 前台 SQL 注入漏洞（留言功能）<\/h3>

漏洞文件<\/strong>：c\/index\/BookAction.class.php<\/code><\/p>

漏洞分析<\/strong>：<\/p>

在 index<\/code> 方法中调用 checkData<\/code> 方法处理用户输入<\/li> filter_strs<\/code> 函数仅对参数值进行 HTML 标签去除和 URL 解码，未过滤 SQL 注入<\/li> P<\/code> 函数和 filter_sql<\/code> 函数仅过滤了参数值，未过滤参数名<\/li> addslashes<\/code> 函数仅转义参数值中的特殊字符<\/li> <\/ol> 利用方法<\/strong>：<\/p> 构造恶意请求，利用参数名进行注入<\/li> 通过闭合 INSERT 语句实现注入<\/li> 示例 Payload： POST \/index.php?m=Book&a=index name=test&mail=test@test.com&content=test&time=1,ischeck) select 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<\/code><\/pre> <\/li> <\/ol>