Omnipotent BMCs from Quanta remain vulnerable to critical Pantsdown threat [Ars Technica]

BMCs offer extraordinary control over cloud computers. So why hasn’t Quanta patched?

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In January 2019, a researcher disclosed a devastating vulnerability in one of the most powerful and sensitive devices embedded into modern servers and workstations. With a severity rating of 9.8 out of 10, the vulnerability affected a wide range of baseboard management controllers made by multiple manufacturers. These tiny computers soldered into the motherboard of servers allow cloud centers, and sometimes their customers, to streamline the remote management of vast fleets of computers. They enable administrators to remotely reinstall OSes, install and uninstall apps, and control just about every other aspect of the system—even when it’s turned off.

Pantsdown, as the researcher dubbed the threat, allowed anyone who already had some access to the server an extraordinary opportunity. Exploiting the arbitrary read/write flaw, the hacker could become a super admin who persistently had the highest level of control for an entire data center.

The industry mobilizes… except for one

Over the next few months, multiple BMC vendors issued patches and advisories that told customers why patching the vulnerability was critical.

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