As a kind of lightweight virtualization technology, containers run in the operating system kernel of a host. Therefore, traditional security issues remain in hosts and networks. Besides, container escape risks, container image risks, virtual network risks, and configuration risks will become new security threats facing containerized infrastructure. Attacks on Container Images With the prevalence of […]

Threat actors who specialize in ransomware are always using Double Extortion Tactics in which they not only encrypt the victim’s data but also threaten to leak sensitive data publicly unless the ransom is paid. Double Extortion Tactics first started appearing in late 2019, becoming an increasingly common trend through 2020. The attack against Allied Universal […]

Overview Recently, NSFOCUS CERT discovered that the Qualys research team disclosed a local privilege escalation vulnerability (CVE-2021-33909, aka Sequoia) in the filesystem layer in the Linux kernel. It is a size_t-to-int type conversion vulnerability in the seq_file interface in the Linux kernel. fs/seq_file.c’s improper restriction of the seq buffer allocation may cause an integer overflow, […]

Overview On July 21, 2021, NSFOCUS detected that Oracle released the April 2021 Critical Patch Update (CPU), which fixed 342 vulnerabilities of varying risk levels. Among these vulnerabilities, three severe ones are easy to exploit to affect WebLogic. Users are advised to take measures without delay to protect against the preceding vulnerabilities. CVE-2021-2382/CVE-2021-2394/CVE-2021-2397: These vulnerabilities […]

After nearly 20 years of cloud computing development, we have stepped into the cloud native era. Cloud native technologies, exemplified by container, service mesh, and micro-service, are bringing disruptive changes to IT infrastructure, platforms, and application systems deployed for various sectors and are also permeating industrial Internet platforms with IT/OT convergence, 5G infrastructure with IT/CT […]

Overview On July 21, 2021, NSFOCUS detected that Oracle released the July 2021 Critical Patch Update (CPU), which fixed 342 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 that users fix these […]

The Internet has become an indispensable part of our lives, and it is of vital importance to work out how to guarantee the security of users’ sensitive information and privacy in cyberspace. Most of the Internet traffic is encrypted with Transport Layer Security (TLS), which cannot guarantee absolute security. Malware has been seen to use […]

Overview According to NSFOCUS CERT’s monitoring, Microsoft released July 2021 Security Updates on July 14 to fix 117 vulnerabilities, including high-risk remote code execution and privilege escalation, in widely used products like Windows, Microsoft Office, Microsoft Edge, Visual Studio, and SharePoint Server. In the vulnerabilities fixed by this month’s security updates, there are 13 critical […]

Today DDoS attacks are continuing to increase in frequency, volume and duration to affect a business’s continuity and reputation. DDoS mitigation capability has become the top priority for CIO/CISOs in Enterprise, Internet content providers and government, while they may have to face the challenge of finding sufficient experienced security professionals to build, maintain and operate […]

Overview Recently, NSFOCUS CERT, through ongoing monitoring, found that SolarWinds released a security advisory fixing a remote code execution vulnerability (CVE-2021-35211). Microsoft reported to SolarWinds that they had discovered that the vulnerability was exploited in the wild and provided a proof of concept of the exploit. Unauthenticated, remote attackers could exploit this vulnerability to execute […]