Blog

Overview On September 14, NSFOCUS CERT detected that Microsoft released the September security update patch, which fixed 63 security issues, involving widely used products such as Windows TCP/IP, .NET Framework, Windows Print Spooler Components, and Windows LDAP. Including high-risk vulnerability types such as privilege escalation and remote code execution. Among the vulnerabilities fixed by Microsoft’s […]

1.  Background As early as 2016, a report from BitSight, an American cybersecurity ratings company, showed that Brazil is one of the riskiest countries to do business in. According to the cyber threat report released by SonicWALL, Brazil suffered more than 33 million intrusion attempts in 2021, and suffered ransomware attacks second only to the […]

Part 1: Investigation Report on New APT Organization MurenShark: Torpedoes Fired to Turkish Navy [1] Characteristics of Attack Tactics Use compromised sites: MurenShark tends to use compromised sites as the file server and the C&C server in the attack process. As shown in the last chapter, the organization used the Near East University site (Yakın […]

Overview In 2022 Q2, NSFOCUS Security Labs detected a series of cyberattacks against Turkey. After analysis, the researchers confirmed that this round of attacks originated from Actor210426, a new threat entity identified by NSFOCUS Security Labs in April 2021. Through the clues of behavior pattern, attack method, attack tool, attack target and so on, NSFOCUS […]

Overview Recently, NSFOCUS CERT found that Apache Hadoop officially fixed a command injection vulnerability. Since Apache Hadoop’s FileUtil.unTar API does not escape the input filename before passing it to the shell, an attacker could exploit this vulnerability to inject arbitrary commands and thus achieve remote code execution. Affected users are recommended to take steps to […]

Background Recently, the cyber threat actor known as UNC 1151 group was spotted to use the Browser in the Browser (BitB) technique in its campaigns. This technique is used for phishing attacks by displaying a new browser window containing a fake login panel on the visited website. The window is so carefully crafted that it […]

Overview Recently, NSFOCUS CERT detected that VMware officially issued a security notice to fix multiple vulnerabilities in products such as VMware Workspace ONE Access, Identity Manager, and VMware vRealize Automation. Attackers can use these vulnerabilities to cause privilege escalation and remote code execution. At present, the official security update has been released, and relevant users […]

The security knowledge graph, a knowledge graph specific to the security domain, is the key to realizing cognitive intelligence in cyber security, and it also lays an indispensable technological foundation for dealing with advanced, continuous and complex threats and risks in cyberspace. NSFOCUS will publish a series of articles about the application of the security […]

Overview Recently, NSFOCUS CERT has detected that Atlassian has officially released a security bulletin, which has fixed several high-risk vulnerabilities in Atlassian products, and relevant users are requested to take measures to protect them. Arbitrary Servlet Filter Bypass Vulnerability (CVE-2022-26136): Vulnerabilities in multiple Atlassian products allow unauthenticated remote attackers to bypass servlet filters used by […]

Overview On July 20, 2022, NSFOCUS CERT monitored and found that Oracle officially released the CPU (Critical Patch Update) in July. A total of 349 vulnerabilities of varying degrees were fixed this time. This security update involves Oracle WebLogic Server, Oracle MySQL, Oracle Java SE, Oracle Retail Applications and many other common products. Oracle strongly […]