June 3, 2024 at 02:59PM
Tenable researchers discovered a high-severity vulnerability in Azure Service Tags, potentially allowing access to customers’ private data. Attackers could exploit the vulnerability to impersonate trusted Azure services, bypass firewall rules, and access internal APIs. Microsoft contends Service Tags are not a security boundary and advises additional authentication and authorization layers for protection.
Based on the meeting notes, the key takeaways are:
– Tenable discovered a high-severity vulnerability in Azure Service Tag that could potentially allow attackers to access customers’ private data.
– The vulnerability allows threat actors to bypass firewall rules by impersonating trusted Azure services and accessing internal services.
– Microsoft disagrees with Tenable’s assessment, stating that Service Tags are not meant as a security boundary and additional authentication and authorization checks are required for a layered network security approach.
– Tenable advises Azure customers to add additional authentication and authorization layers on top of network controls based on Service Tags to protect their assets from exposure.
– Microsoft has not found evidence of exploitation or abuse of service tags in attacks.
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