Vulnerability Description On May 28, Fastjson 1.2.68 and before were reported to contain a remote code execution vulnerability that bypasses the autoType switch to implement deserialization of classes that contain security risks. Attackers could exploit this vulnerability to execute arbitrary code on the target machine.

Overview Recently, Apache Tomcat released a security advisory, announcing the fix of a remote code execution vulnerability (CVE-2020-9484) due to persistent session. An attacker can exploit this vulnerability only when the following conditions are met: The attacker can take control of the contents and name of a file on the server. The server is configured […]

1. Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at May 31, 2020. 2. Top 10 countries in attack percentage: The Belarus is in first place. The Cape Verde is in the second place. The country China […]

Active Families Gafgyt As one of the largest IoT DDoS families, Gafgyt compromises such devices as routers and cameras by means of password cracking and exploits to receive C&C commands and launch DDoS attacks. In 2019, the Gafgyt family continued to be active, mainly targeting North America, Europe, and Australia. The number of Gafgyt-based malware […]

Overview Recently, Cisco officially released a security advisory, announcing the fix of a high-risk vulnerability (CVE-2020-3280) in Unified Contact Center Express (Unified CCX). The vulnerability stems from the fact that during the deserialization operation of the software, the input provided by the user is not sufficiently restricted. The attacker can send a malicious Java object […]

Overview Some versions of WellinTech KingView are prone to multiple vulnerabilities, including the real-time database access authorization bypass vulnerability and denial-of-service vulnerability existing in the web data transmission service. Vulnerability details are as follows: 1. KingView real-time database access authorization bypass vulnerability (CNVD-C-2020-87074) 2. KingView denial-of-service vulnerability existing in the web data transmission service (CNVD-C-2020-92339) […]

The world’s leading research and advisory company, Gartner, has named NSFOCUS as a Representative Vendor in its May 2020 Market Guide for Security Threat Intelligence Products and Services. This guide provides in-depth analysis of the threat intelligence (TI) market, focusing on introducing its technical value and commercial potential of threat intelligence, and selecting credible vendors […]

Overview Microsoft released the May 2020 security patch on Tuesday that fixes 111 vulnerabilities ranging from simple spoofing attacks to remote code execution in various products, including .NET Core, .NET Framework, Active Directory, Common Log File System Driver, Internet Explorer, Microsoft Dynamics, Microsoft Edge, Microsoft Graphics Component, Microsoft JET Database Engine, Microsoft Office, Microsoft Office […]

1. Top 10 countries in attack counts: The above diagram shows the top 10 regions with the most malicious IP addresses from the NSFOCUS IP Reputation databases at May 24, 2020. 2. Top 10 countries in attack percentage: The Belarus is in first place. The Cape Verde is in the second place. The country China […]

DDoS Botnets In 2019, NSFOCUS Security Labs detected over 400,000 DDoS attacks launched via botnets, a sharp increase compared with 2018 (8323 DDoS attacks). According to our observation, thebotnets running on IoT devices were mainly Mirai and Gafgyt families. These two families were exploited to launch over 60% of DDoS attacks in the first half […]