Still using ancient protocol suite? April update might make you wish you weren't
Microsoft's April 2024 security update blues continue with confirmation of a"significant increase" in NTLM authentication traffic in Windows Server.:"This issue is likely to affect organizations that have a very small percentage of primary domain controllers in their environment and high NTLM traffic."
Microsoft said it is"working on a resolution and will provide an update in an upcoming release." A user could uninstall the patch, but doing so would also remove the security fixes included in the update.NTLM – New Technology LAN Manager – is a very old suite of Microsoft security protocols designed to authenticate users. Microsoft would like people to, but enterprises cling to it. There is, after all, always that one weird app written decades ago that was hard-coded to use it.
This is because NTLM doesn't need a local network connection to a DC and will work when the target server is unknown. Both scenarios can be problematic for Kerberos despite the authentication protocol being a good deal more secure. Hence prizing enterprises away from NTLM has proven a challenge. Microsoft said:"Our end goal is eliminating the need to use NTLM at all to help improve the security bar of authentication for all Windows users."
Ramping up traffic on networks of customers who have yet to heed Microsoft's advice is certainly one way of achieving that goal, even though we're pretty sure this wasn't the company's intention. ®Microsoft gives Hyper-V ceilings a Herculean hike1More big city newspapers drag Microsoft, OpenAI hard in copyright lawsuit
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