微信小程序审核安全检测漏洞导致线上环境一直高频访问报警事故！

Tinywan

发布于 2024-11-21 10:45:31

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文章被收录于专栏：开源技术小栈开源技术小栈

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业务背景

昨天有个线上项目迁移，涉及到小程序域名接口变更，结果提交审核的时候忘记修改接口地址为线上正式地址，搞了个紧急发布版本，紧急发布版本提交审核后，系统就收到上了上面的邮件报警通知。

昨日，我们进行了一项项目迁移工作，其中涉及到了小程序域名接口的变更。然而，在提交审核的环节中，不慎遗漏了将接口地址更新为线上正式地址的重要步骤，这一疏忽直接导致了紧急发布版本的必要性。随后，紧急发布版本被迅速提交至审核流程，但很奇怪的是，提交紧急审核的同时。收到了好多线上邮件报警通知，提示我们相关问题。

异常报警

昨晚异常群有一条异常报警

响应错误：Server Unknown Error
详细错误：Uncaught InvalidArgumentException: Malformed UTF-8 characters, possibly incorrectly encoded in
请求时间：2024-11-07 21:55:38
请求IP：106.55.202.118
请求路由：/open/v3/live/record?action=eval&live_id=undefined%bf%27%bf'%27%22'"\%5C%0d%0a%23%23

排查原因

查看系统访问日志

106.55.202.118 - - [07/Nov/2024:21:55:33 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%27%29%29%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%284%29%29%29coce%29%20limit%201%23 HTTP/1.1" 401 468 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval%27%29%29%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%284%29%29%29edel%29%20limit%201%23&live_id=undefined HTTP/1.1" 401 468 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=%22%20OR%20%28SELECT%2AFROM%28SELECT%28SLEEP%284%29%29%29comp%29%20limit%201%23&live_id=undefined HTTP/1.1" 401 451 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%22%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%283%29%29%29boqn%29%20limit%201%23 HTTP/1.1" 401 461 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval%22%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%283%29%29%29ednt%29%20limit%201%23&live_id=undefined HTTP/1.1" 401 461 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%27%20union%20select%201--%20 HTTP/1.1" 401 378 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%27%20union%20select%201%2C2--%20 HTTP/1.1" 401 384 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%27%20union%20select%20md5%283141592657%29%2C2--%20 HTTP/1.1" 401 416 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:34 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%27%20union%20select%201%2Cmd5%283141592657%29--%20 HTTP/1.1" 401 416 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:36 +0800] "GET /open/v3/live/record?action=eval&live_id=undefined%22%29%29%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%283%29%29%29kmen%29%20limit%201%23 HTTP/1.1" 401 469 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"
106.55.202.118 - - [07/Nov/2024:21:55:36 +0800] "GET /open/v3/live/record?action=%22%29%20AND%20%28SELECT%2AFROM%28SELECT%28SLEEP%284%29%29%29zmys%29%20limit%201%23&live_id=undefined HTTP/1.1" 401 457 "https://live.tinywan.com/" "Tencent Security Team, more information: https://developers.weixin.qq.com/community/minihome/doc/0008ea401c89c02cff2d1345051001 (672cc64a5f089b56c41bb4251c64) 7262"

一开始怀疑是被攻击了，查询了一下请求IP106.55.202.118发现怎么是中国广东省广州市运营商：腾讯 而且每个请求都携带参数 Tencent Security Team。

最终排查原因是：小程序提交审核时，微信会对你的后台进行扫描。

小程序安全检测原文

为进一步提升小程序的安全性和用户体验，目前平台将对提审的小程序进行安全检测，以便能及时帮助开发者发现小程序可能存在的安全漏洞。

一、背景介绍

小程序在开发过程中若存在安全漏洞的情况，如敏感数据篡改、拖库信息泄露、WEB攻击等，容易造成小程序的安全隐患，可能带来代码易被反编译、核心业务逻辑被破译、算法易被二次打包等风险。因此，平台将对提审的小程序进行安全检测，以协助开发者提升小程序服务的安全性，同时开发者也应加强自身小程序安全漏洞监测能力，保证可及时消除潜在的安全风险。

二、审核过程

安全检测过程中，平台会模拟真实业务场景，向提审小程序的后台发送服务请求，服务器会收到来自平台（显示为：Tencent Security Team，请求IP为106.55.202.118；113.96.223.69；125.39.132.125；43.139.209.119）的请求。该请求均以较低速率进行，正常情况下不会影响小程序的正常服务。若确实出现了影响小程序正常业务的特殊情况，如用户无法进行小程序的正常访问，开发者可基于自身业务情况，对相应请求加以限频，如有其他疑问，欢迎随时通过官方社区进行反馈。