IT koehler blog

IT koehler blog

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Today a new exchange update KB5008631 for all supported versions of exchange was released. See the original link to Exchange Team blog:https://techcommunity.microsoft.com/t5/exchange-team-blog/released-january-2022-exchange-server-security-updates/ba-p/3050699 Here are the links to download manually: Exchange Server 2013 CU23 Exchange Server 2016 CU21 and CU22 Exchange Server 2019 CU10 and CU11 They say there are some vulnerabilities but no exploit, so there is not that much pressure to […]

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Some days ago Microsoft announced the final ending of basic authentication in Exchange Online. Today, we are announcing that, effective October 1, 2022, we will begin to permanently disable Basic Auth in all tenants, regardless of usage, with the exception of SMTP Auth. https://techcommunity.microsoft.com/t5/exchange-team-blog/basic-authentication-and-exchange-online-september-2021-update/ba-p/2772210 So why disabling Basic Auth? It works like a charm! Basic […]

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I thought my holidays already started, but there is a very critical sercurity vulnerability included in Microsoft Active Directory. More precisely there are two vulnerabilities, CVE-2021-42287 and CVE-2021-42278 . Vulnerability CVE-2021-42278 contains an attack which is also known as sAMAccountName spoofing or impersonation. It is possible to rename Computer Accounts of DomainController to impersonate them. […]

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