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Microsoft Patches Azure Cosmos DB Flaw Resulting in Distant Code Execution

By Ionut Arghire on November 01, 2022

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A lacking authentication test vulnerability in Azure Cosmos DB may have allowed an attacker to execute arbitrary code remotely, Orca Safety warns.

Azure Cosmos DB is a NoSQL database used on e-commerce platforms to retailer catalog knowledge, and so as processing pipelines for occasion sourcing.

The safety defect was recognized in Azure Cosmos DB Jupyter notebooks, an open-source interactive developer setting (IDE) that permits builders to share paperwork, stay code, visualizations, and extra. Constructed into Azure Cosmos DB, Jupyter notebooks could include secrets and techniques and personal keys.

Known as CosMiss, the flaw may have allowed an attacker with data of the pocket book workspace UUID, often known as ‘forwardingId’, to entry the pocket book with out authentication.

The attacker would have had the flexibility to change the container’s file system and obtain distant code execution, Orca says.

The CosMiss vulnerability, Orca explains, may have allowed an attacker to learn and write knowledge to a pocket book, inject code, and overwrite code. Nonetheless, the assault would have been potential provided that the attacker knew the forwardingId.

“So far as we all know, the one technique to receive the forwardingId is to open the Pocket book as an authenticated consumer. The forwardingId will not be documented as a secret although, so we don’t have any purpose to imagine that customers would deal with it as such,” Orca notes.

Whereas analyzing Cosmos DB, Orca’s safety researchers found that, though the requests despatched by a pocket book server within the backend contained an authorization header, it was potential to re-send requests even after eradicating the header.

This allowed the researchers to checklist totally different notebooks for a similar server, in addition to to learn contents and write knowledge to them. With the ability to overwrite knowledge on the pocket book, the researchers then injected code to create a reverse shell and obtain distant code execution.

Orca reported the vulnerability to Microsoft on October 3. The tech large patched the problem inside two days.

“We verified the repair and may verify that now all Cosmos DB pocket book customers require an authorization token within the request header earlier than having the ability to entry a pocket book,” Orca says.

Associated: Microsoft Patches Vulnerability Permitting Full Entry to Azure Service Cloth Clusters

Associated: Microsoft Resolves Padding Oracle Vulnerability in Azure Storage SDK

Associated: Azure Service Cloth Vulnerability Can Result in Cluster Takeover

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