Microsoft has addressed a vulnerability in the Azure Automation service that could have allowed attackers to take complete control over other Azure customers’ data.
Microsoft Azure Automation Service provides process automation, configuration management, and update management features, with each scheduled job running inside isolated sandboxes for each Azure customer.
The vulnerability, dubbed AutoWarp by Orca Security’s Cloud Security Researcher Yanir Tsarimi, who discovered it, made it possible for an attacker to steal other Azure customers’ Managed Identities authentication tokens from an internal server that manages the sandboxes of other users.
“Someone with malicious intentions could’ve continuously grabbed tokens, and with each token, widen the attack to more Azure customers,” Yanir Tsarimi said.
Microsoft notified all affected Azure Automation service customers and recommended following the security best practices outlined here.
Redmond mitigated another Azure bug in December that let attackers gain access to the source code of customers’ Azure web apps.