Microsoft’s Service Tag Slip-Up: How Tenable Taught Us to Read the Fine Print
Microsoft Security Response Center (MSRC) investigated Tenable Inc.’s report on cross-tenant access via service tags. Initially flagged as a vulnerability, it was found that service tags worked as intended but required better documentation. Microsoft updated the service tags documentation to clarify their use and emphasized multi-layered security.
Hot Take:
Microsoft Azure’s service tags are like those mysterious buttons on a blender: easy to misunderstand, potentially messy if misused, but perfectly functional if you follow the manual. Hats off to Tenable for pointing out the blender’s hidden smoothie mode!
Key Points:
- Tenable Inc. alerted Microsoft to a potential cross-tenant access vulnerability in Azure’s service tags.
- Microsoft acknowledged the issue, rewarded Tenable, and updated the documentation.
- Service tags should not be treated as security boundaries but as routing mechanisms.
- Authentication is key to preventing any cross-tenant access issues.
- Microsoft’s response included documentation updates and a coordinated disclosure with Tenable.
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