Security-issue: guest-guest impersonation
Read OriginalThe article details a security flaw in SQL Server (versions 2005-2008 R2) where enabling the guest account in multiple databases can lead to guest-guest impersonation. This allows a user (e.g., a developer) in one database to impersonate the local guest, connect to another database with guest enabled, and gain unauthorized permissions, bypassing explicit denials. The issue was reported to Microsoft, with a fix expected only in a future major release (codename 'Denali').
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