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Intel published details about the vulnerability on its Security Center yesterday. The company is warning users to check with their equipment manufacturers for updated firmware or, if that’s unavailable, to take steps to secure their systems.

Identified by Maksim Malyutin, a researcher with the Berkeley-based startup Embedi, the vulnerability has existed in systems released by Intel since 2010-2011. Intel noted in its security advisory that the bug does not affect any of its consumer PCs.

The escalation of privilege vulnerability, CVE-2017-5689, could allow a hacker to remotely access machines running Intel’s Active Management Technology (AMT) or Intel Standard Manageability (ISM). It could also enable an unauthorized user to change management features on systems running either AMT, ISM or Intel’s Small Business Technology.

“The vulnerability is a serious threat and the prevention measures from exploitation is a timely process for users — timely, but necessary,” Embedi said in a blog post today. “It is also important to note the difficulties with firmware patching, which is needed to mitigate this vulnerability. Firmware patching takes an extremely long time to test before it is deployed to all of their users.”

Although previous reports suggested the vulnerability has existed since 2008, Embedi said the bug affects only Intel firmware that’s come out since 2010 at the earliest.

In a tweet today, Embedi CTO Dmitriy Evdokimov posted a graph from the IoT device search engine Shodan showing that top organizations potentially affected by the AMT vulnerability include several universities, as well as telcos such as Verizon Wireless and Deutsche Telekom.

Intel’s Security Center advisory provides links to both a PDF guide to detect which systems might have the vulnerability, and a downloadable mitigation guide. According to the mitigation guide, “Intel highly recommends that the first step in all mitigation paths is to unprovision the Intel manageability SKU to address the network privilege escalation vulnerability.”

Intel spokesperson William Moss told Kaspersky Labs’ Threatpost, “We have implemented and validated a firmware update to address the problem, and we are cooperating with equipment manufacturers to make it available to end-users as soon as possible.”

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