A bug in VMWare’s Carbon Black endpoint safety resolution crashed quite a few enterprise servers (opens in new tab) and workstations (opens in new tab), the corporate has confirmed.

Greater than 50 organizations have to date reported experiencing the Blue Display screen of Loss of life (BSOD), and suspected Carbon Black to be on the core of the problem.

The basis of the issue seems to be a ruleset VMware deployed to the answer earlier this week, to its Cloud Sensor. The ruleset, 3.6.0.1979 – 3.8.0.398 is what appears to have precipitated the crashes. Apparently, customers operating Home windows 10 x64, Server 2012 R2 x64, in addition to Server 2019 x64, had been affected.

Battle

“VMware Carbon Black is conscious of a problem affecting a restricted variety of buyer endpoints, the place sure older sensor variations had been impacted by an replace of our behavioral preventative capabilities,” the corporate mentioned in a press release. “The difficulty has been recognized and corrected, and VMware Carbon Black is working with impacted prospects.”

Additional investigation uncovered a battle between Carbon Black and AV signature pack 8.19.22.224. 

Publishing a safety advisory within the aftermath, VMware defined how “an up to date Risk Analysis ruleset was rolled out to Prod01, Prod02, ProdEU, ProdSYD, and ProdNRT after inner testing confirmed no indicators of points.” The ruleset has since been rolled again, and deeper evaluation is at present underway, it was added. 

To organizations that may’t look forward to a repair, VMware really useful placing sensors into Bypass mode through Carbon Black Cloud Console, as that permits customers besides the units and roll again the damaged ruleset. 

Nevertheless, the repair doesn’t appear to be working for everybody. Virtually 24 hours later, one person commented “nonetheless affected – round a dozen endpoints (opens in new tab) haven’t recovered, palms appear tied,” additional including that the bypass was utilized. “Reboot into protected mode with networking and wait a %undefined time% interval. Reboot and see if fastened. Some are – some aren’t. Repeat & Attempt once more.”

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By way of: BleepingComputer (opens in new tab)