$files = Get-PSDrive -PSProvider FileSystem | foreach { (Get-ChildItem ($_.Root) -Recurse -force -include ("*.jar", "*.war", "*.ear") -ea 0 ) } | select -Unique
if ($files) {
    $log4jFiles = @()
    foreach ( $file in $files ) {
        $extn = [IO.Path]::GetExtension($file)
        if ($extn -eq ".jar" ) {
            if (Get-Content $file.FullName | select-string "JndiLookup.class") { $log4jFiles += $file.FullName }
        }
        Elseif ( $extn -eq ".war" -or $extn -eq ".ear" ) {
            if (Get-Content $file.FullName | select-string "log4j-core-2\.((\d(\-.*)?|1(?!(6|2))[0-5]|12\.[01])(\.\d)?)\.jar" ) { $log4jFiles += $file.FullName }
        }
    }
    if ($log4jFiles) {
        Write-Output "Potential Log4j vulnerabilities were found.`n"
        $log4jFiles
    }
    Else { "No Log4j vulnerabilities were found" }
}
Else { "No Log4j vulnerabilities were found" }