Event Overview Recently, NSFOCUS CERT discovered a slew of security incidents that exploited security vulnerabilities (ProxyShell) in Microsoft Exchange. Also, NSFOCUS found that the new LockFile ransomware group LockFile took advantage of these ProxyShell and PetitPotam vulnerabilities to target enterprise domain environments, finally encrypting quite a few hosts from enterprises...
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New Architecture, New Challenges: Service Security Issues in the 5G Core Network and How to Detect Them
Abstract: 5G is the fifth-generation technology standard for mobile communication networks. The service-based architecture (SBA) of the 5G core network is designed with a cloud-native approach. By borrowing the "microservice" concept implemented in the IT field and dividing a whole entity with multiple functions into individual parts, each providing an...
Linux Kernel Arbitrary Code Execution Vulnerability (CVE-2021-3490) Threat Alert
Overview Recently, NSFOCUS CERT found that a security researcher published details and the PoC of an arbitrary code execution vulnerability (CVE-2021-3490) in eBPF and exploited this vulnerability to cause local privilege escalation on Ubuntu 20.10 and 21.04. This vulnerability exists because the eBPF ALU32 bounds tracking for bitwise ops (AND,...
Cloud Native Security in Infrastructure Construction
Cloud native security is the development trend of cloud security in the coming years. On the one hand, inherent security of cloud native is worthy of in-depth study. On the other hand, with the reconstruction and upgrade of infrastructure, there is a clear trend towards the integration of cloud native technologies...
NSFOCUS Attends APEX CBET II
BEIJING. – Sep 14, 2021 The 2nd APEC Cross-Border E-Commerce Training (APEC CBET II) is held at 9:00am-11:30am (GMT+8) on September 8, 15 & 22, 2021 by the Department of International Trade and Economic Affairs of the Ministry of Commerce of China, supported by DHgate. This event is facilitated specifically...
Top Four Risks When Using Serverless Function in Cloud Native Applications
Serverless is a new computing mode of the cloud native architecture, mainly taking the form of function as a service (FaaS). For the serverless mode, developers will write a function and define when and how to invoke it and then the function will run in the server provided by the...
