Detection of Misconfigurations & Threats in AD

🔒 Secure Bits 💡
𝗗𝗼 𝘆𝗼𝘂 𝗿𝗲𝗴𝘂𝗹𝗮𝗿𝗹𝘆 𝗰𝗵𝗲𝗰𝗸 𝘆𝗼𝘂𝗿 𝗔𝗰𝘁𝗶𝘃𝗲 𝗗𝗶𝗿𝗲𝗰𝘁𝗼𝗿𝘆 𝗳𝗼𝗿 𝗺𝗶𝘀𝗰𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗲𝗱 𝗔𝗖𝗟𝘀?

ACL misconfigurations are one of the 𝗺𝗼𝘀𝘁 𝗼𝘃𝗲𝗿𝗹𝗼𝗼𝗸𝗲𝗱 — yet severe — vulnerabilities in AD environments. They often stay hidden until a malicious actor finds them… and by then, it’s too late.

𝗛𝗲𝗿𝗲 𝗮𝗿𝗲 𝗷𝘂𝘀𝘁 𝗮 𝗳𝗲𝘄 𝗲𝘅𝗮𝗺𝗽𝗹𝗲𝘀 𝗼𝗳 𝘁𝗵𝗲𝘀𝗲:
🔹 𝗗𝗖𝗦𝘆𝗻𝗰 — permissions that let an account replicate data (including secrets) from the AD DS database.
🔹 𝗗𝗖𝗦𝗵𝗮𝗱𝗼𝘄 — the ability to push changes to AD from a compromised machine acting as a rogue Domain Controller.
🔹 𝗦𝗺𝗮𝗹𝗹𝗲𝗿 𝗱𝗲𝗹𝗲𝗴𝗮𝘁𝗶𝗼𝗻𝘀 — write access, password resets, read LAPS password, GPO edit permissions, and many other privileges/permissions that can become escalation paths to full AD DS control.
🔹 𝗔𝗗 𝗖𝗦 (𝗘𝗦𝗖-𝗻) — misconfigurations in Active Directory Certificate Services enabling escalation from a basic user/computer.

These flaws are 𝗱𝗮𝗻𝗴𝗲𝗿𝗼𝘂𝘀 because 𝗮𝗻𝘆 authenticated user in your domain can abuse them — often from just a regular workstation.

𝗦𝗼 𝗵𝗼𝘄 𝗱𝗼 𝘆𝗼𝘂 𝗽𝗿𝗼𝘁𝗲𝗰𝘁 𝘆𝗼𝘂𝗿𝘀𝗲𝗹𝗳?
🛡️ Don’t delegate privileges unless you 𝗳𝘂𝗹𝗹𝘆 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱 their security impact.
🛡️ 𝗥𝗲𝗴𝘂𝗹𝗮𝗿𝗹𝘆 𝘀𝗰𝗮𝗻 your environment for ACL misconfigurations — just like attackers do during recon.

You can do this 𝗺𝗮𝗻𝘂𝗮𝗹𝗹𝘆 (e.g. with PowerShell), but for more comprehensive and continuous detection, you might want to 𝘂𝘀𝗲 𝗮 𝘁𝗼𝗼𝗹.

🔧 One solution I’ve recently tested is 𝗙𝗼𝗿𝗲𝘀𝘁𝗮𝗹𝗹 𝗜𝗦𝗣𝗠.
I’ve been working directly with the Forestall team, and after some testing, I can confidently say the 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘀. It scans for misconfigured ACLs, dangerous permissions, and even attack paths.
👉 𝗠𝗼𝗿𝗲 𝗱𝗲𝘁𝗮𝗶𝗹𝘀 are in the link provided in the comments.

🧪 𝗧𝗵𝗮𝗻𝗸𝘀 𝘁𝗼 𝗼𝘂𝗿 𝗰𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻, you can also try it for 𝗳𝗿𝗲𝗲 – just write a comment, and I will make it happen. If you give it a spin, let me know — I might even be able to arrange a discount for you.

Are you regularly checking your AD for these misconfigurations?