The scans were first detected on May 25, 2019, experts explained that a single threat actor launched them from the Tor network to hide their identities.
Bad Packets researchers also observed scanning activity associated with the BlueKeep, most of the requests originated from the Netherlands, Russia. and China.
The vulnerability, tracked as CVE-2019-0708, impacts the Windows Remote Desktop Services (RDS) and was addressed by Microsoft with May 2019 Patch Tuesday updates. BlueKeep is a wormable flaw that can be exploited by malware authors to create malicious code with WannaCry capabilities.
As explained by Microsoft, this vulnerability could be exploited by malware with wormable capabilities, it could be exploited without user interaction, making it possible for malware to spread in an uncontrolled way into the target networks.
Many security experts have already developed their own exploit code for this issue without publicly disclosing it for obvious reasons.
Microsoft has released patches for Windows 7, Server 2008, XP and Server 2003. Windows 7 and Server 2008 users can prevent unauthenticated attacks by enabling Network Level Authentication (NLA), and the threat can also be mitigated by blocking TCP port 3389.
Experts at the SANS Institute observed two partial exploits that are publicly available. Chaouki Bekrar, the founder of zero-day broker firm Zerodium, explained that the flaw can be exploited remotely by an unauthenticated user to gain access to a device with SYSTEM privileges. Researchers at McAfee developed a PoC exploit that could be exploited to get remote code execution.
Now the popular expert Robert Graham has scanned the Internet for vulnerable systems. He discovered more than 923,000 potentially vulnerable devices using the masscan port scanner and a modified version of rdpscan,
The initial scan executed with
“However, there is a lot of junk out there that’ll respond on this port. Only about half are actually Remote Desktop.” explained Graham.
The scan revealed 923,671 potentially vulnerable systems, likely hackers will launch a massive offensive in the next weeks.
“The upshot is that these tests confirm that roughly 950,000 machines are on the public Internet that are vulnerable to this bug. Hackers are likely to figure out a robust exploit in the next month or two and cause havoc with these machines. ” Graham added.
Below the detailed results of the scans conducted by the expert:
Summarizing, over 1.4 million machines have been patched and 1.2 million devices refused any
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