Security News > 2021 > December > Microsoft warns of easy Windows domain takeover via Active Directory bugs
Microsoft warned customers today to patch two Active Directory domain service privilege escalation security flaws that, when combined, allow attackers to easily takeover Windows domains.
Redmond's warning to immediately patch the two bugs - both allowing attackers to impersonate domain controllers - comes after a proof-of-concept tool that can leverage these vulnerabilities was shared on Twitter and GitHub on December 11.
"When combining these two vulnerabilities, an attacker can create a straightforward path to a Domain Admin user in an Active Directory environment that hasn't applied these new updates," Microsoft explains in an advisory published today.
"As always, we strongly advise deploying the latest patches on the domain controllers as soon as possible."
Researchers who tested the PoC stated that they were able to easily use the tool to escalate privileges from standard Active Directory user to a Domain Admin in default configurations.
Replace the marked area with the naming convention of your domain controllers.
News URL
Related news
- Researchers Uncover OS Downgrade Vulnerability Targeting Microsoft Windows Kernel (source)
- Microsoft fixes Windows 10 bug causing apps to stop working (source)
- Microsoft wants $30 if you want to delay Windows 11 switch (source)
- Microsoft delays Windows Recall again, now by December (source)
- Microsoft Delays Windows Copilot+ Recall Release Over Privacy Concerns (source)
- Week in review: Windows Themes spoofing bug “returns”, employees phished via Microsoft Teams (source)
- Microsoft confirms Windows Server 2025 blue screen, install issues (source)
- Microsoft Notepad to get AI-powered rewriting tool on Windows 11 (source)
- Microsoft says recent Windows 11 updates break SSH connections (source)
- Microsoft blames Windows Server 2025 automatic upgrades on 3rd-party tools (source)