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tikiwiki/CVE-2020-15906/README.zh-cn.md
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tikiwiki/CVE-2020-15906/README.zh-cn.md
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# Tiki Wiki CMS Groupware 认证绕过漏洞(CVE-2020-15906)
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Tiki Wiki CMS Groupware或简称为Tiki(最初称为TikiWiki)是一种免费且开源的基于Wiki的内容管理系统和在线办公套件。在如下这些版本21.2, 20.4, 19.3, 18.7, 17.3, 16.4前存在一处逻辑错误,管理员账户被爆破60次以上时将被锁定,此时使用空白密码即可以管理员身份登录后台。
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参考链接:
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- https://info.tiki.org/article473-Security-Releases-of-all-Tiki-versions-since-16-3
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- https://github.com/S1lkys/CVE-2020-15906
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- http://packetstormsecurity.com/files/159663/Tiki-Wiki-CMS-Groupware-21.1-Authentication-Bypass.html
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- https://srcincite.io/pocs/cve-2021-26119.py.txt
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## 漏洞环境
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执行如下命令启动一个Tiki Wiki CMS 21.1:
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```
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docker compose up -d
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```
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环境启动后,访问`http://your-ip:8080`可以看到其欢迎页面。
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## 漏洞复现
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我们可以使用<https://srcincite.io/pocs/cve-2021-26119.py.txt>中的[POC](poc.py)进行复现。该POC先使用CVE-2020-15906绕过认证,获取管理员权限;再使用Smarty的沙盒绕过漏洞(CVE-2021-26119)于后台执行任意命令:
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```shell
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python poc.py your-ip:8080 / id
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```
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注意,受到漏洞原理的影响,执行该POC会导致管理员账户被锁定。
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