Microsoft staff unintentionally expose 38TB of inner information; firm reply

Microsoft’s AI analysis group unintentionally uncovered 38 terabytes of personal information, together with delicate info like secrets and techniques, non-public keys, passwords, and over 30,000 inner Microsoft Teams messages whereas sharing open-source coaching information on GitHub, based on cloud safety firm Wiz.

 Microsoft said no customer data was exposed.
Microsoft mentioned no buyer information was uncovered.

The publicity occurred as a result of the researchers used an Azure function referred to as Shared Access Signature (SAS) tokens to share their information, however the entry stage was configured incorrectly. Instead of limiting entry to particular information, the hyperlink shared the complete storage account, together with the extra 38TB of personal information, the report mentioned.

Additionally, the token was misconfigured to permit “full control” permissions, thus “not only could an attacker view all the files in the storage account, but they could delete and overwrite existing files as well.”

Microsoft’s reply

Wiz reported its findings to Microsoft on June 22, main Microsoft to revoke the SAS token on June 24.

Microsoft accomplished its investigation and mentioned that no buyer information or different Microsoft providers have been in danger as a consequence of this problem. Furthermore, it mentioned that clients needn’t take any further motion for safety.

“No customer data was exposed, and no other internal services were put at risk because of this issue. No customer action is required in response to this issue,” it mentioned in a press release.

The tech large defined that the issue stemmed from a Microsoft researcher inadvertently together with the SAS token in a public GitHub repository whereas contributing to open-source AI studying fashions. Microsoft clarified that there was no safety problem or vulnerability inside Azure Storage or the SAS token function.

To stop such incidents, Microsoft mentioned, it encourages customers to create and deal with SAS tokens appropriately and observe greatest practices. It mentioned it’s also actively enhancing its detection and scanning instruments to determine circumstances of over-provisioned SAS URLs and improve their secure-by-default posture.

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