Overview On May 12, 2021, Microsoft released May 2021 Security Updates to fix 55 vulnerabilities, including high-risk remote code execution and privilege escalation, in widely used products like Microsoft Windows, Office, Exchange Server, Visual Studio Code, and Internet Explorer. In the vulnerabilities fixed by this month’s security updates, there are four critical vulnerabilities and 50 […]

Vulnerability Description On May 26, NSFOCUS CERT discovered that VMware released a security advisory that announces mitigation of the VMware vCenter Server remote code execution vulnerability (CVE-2021-21985) and vCenter Server plug-in authentication bypass vulnerability (CVE-2021-21986). The Virtual SAN Check plug-in in vCenter Server lacks input validation, allowing attackers who have accessed vSphere Client (HTML5) through […]

As the world’s largest cybersecurity industry conference, the RSA Conference held its 30th annual event in 2021. It has been a driving force behind sharing, innovation, and progress in the global cybersecurity community. NSFOCUS stood out at the RSA Conference 2021 by making a debut on the conference speech podium as a Chinese security vendor. […]

Key Findings – 2 The Bandwidth of DDoS attacks in 5G Environments Grew Steadily. Small and Medium-sized Attacks Overtook Small Attacks to Become the Mainstream Over the five-year period from 2016 to 2020, the average peak size of DDoS attacks rose to a new level since the latter half of 2018 despite obvious fluctuations. Of […]

Produced by: Yuchen PAN Introduction Recently, an IoT malware sample dubbed SBIDIOT is found to engage in malicious activities, mainly distributed denial of service (DDoS) attacks. So far, very few incidents of this malware have been discovered by VirusTotal and cybersecurity communities. Though some IoT botnets focus on cryptocurrency mining or fraud activities, SBIDIOT-related botnets […]

RSA Conference 2021 May 17-20, Virtual Event

Vulnerability Description On April 21, 2021, NSFOCUS detected that Oracle released the April 2021 Critical Patch Update (CPU), which fixed 400 vulnerabilities of varying risk levels. This CPU involves multiple commonly used products, such as Oracle Database Server, Oracle Java SE, Oracle Fusion Middleware, Oracle MySQL, and Oracle Communications. Oracle strongly recommends users fix these […]

Background On May 7, 2021, local time, Colonial Pipeline, the largest fuel pipeline operator in the USA, was forced to shut down its critical fuel network serving states on the US East Coast after being hit by a ransomware attack. This ransomware attack had fuel supply halted across three regions, affecting 17 states. On May […]

Vulnerability Description On April 21, 2021, NSFOCUS detected that Oracle released the April 2021 Critical Patch Update (CPU), which fixed 400 vulnerabilities of varying risk levels. Seven of these vulnerabilities are severe and easy to exploit and affect WebLogic. Users are advised to take measures without delay to protect against the preceding vulnerabilities. CVE-2021-2135: This […]

Produced by: Siqi GUO, Qiwen LUO Increasingly Serious Reflection Attacks Reflection attacks, as nothing new, have become one of the most troublesome and common DDoS attacks and are dominant in bandwidth consumption DDoS attacks. According to NSFOCUS’s latest 2020 DDoS Attack Landscape, reflection attacks made up 34% of all DDoS attacks in 2020. Compared with […]