[New feature] Download Domains configuration check#577
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dpaulson45
requested changes
May 6, 2021
dpaulson45
approved these changes
May 7, 2021
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Feature description
We introduced the
Download Domainsfeature with Exchange 2016 CU18 and Exchange 2019 CU7. The feature was introduced to addressCVE-2021-1730 Spoofing Vulnerabilityand should be configured.For more information, see the FAQ section: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1730
Fix:
We check if the
Download Domainsfeature is enabled or not. We show a red warning if it's available but not configured (disabled).If the feature is enabled, then we check the configuration.
We compare the
ExternalDownloadHostNameandInternalDownloadHostNamewith the OWAExternalUrlandInternalUrland show a red warning if they are configured to use the same namespace (like owa.contoso.com).Validation:
Validated in lab. Possible Pester test case.