Blog

HTTP Stack Remote Code Execution Vulnerability (CVE-2022-21907) Alert

January 28, 2022 | Jie Ji

Overview On January 12, NSFOCUS CERT detected that Microsoft released a monthly security update, which fixed an HTTP protocol stack remote code execution vulnerability (CVE-2022-21907). A buffer overflow can occur due to a boundary error in the HTTP Trailer Support feature in the HTTP stack (HTTP.sys). An unauthenticated attacker can execute arbitrary code on a […]

Apache log4j Deserialization and SQL Injection Vulnerability (CVE-2022-23302/CVE-2022-23305/CVE-2022-23307) Alert

January 26, 2022 | Jie Ji

Overview On January 19, NSFOCUS CERT detected that Apache released a security bulletin that disclosed three Log4j vulnerabilities, all of which affected the Apache Log4j 1.x version, and the official support and maintenance are no longer available. Please take measures as soon as possible to protect the relevant users. Apache log4j JMSSink Deserialization Code Execution […]

Cutting-Edge Technologies Empowering Data Sharing and Computing Between Enterprises

January 19, 2022 | Jie Ji

Compliance has seen radical changes in the requirements and driving force of data security and a broader category of data objects under data security protection. Application scenarios covered by data security will become more diversified, and data security requirements will cover all phases of the data lifecycle. In order to better cope with the challenges […]

Apache Dubbo Remote Code Execution Vulnerability (CVE-2021-43297) Notification

January 13, 2022 | Jie Ji

Overview On January 12, NSFOCUS CERT found that Apache issued a security notice to fix a remote code execution vulnerability (CVE-2021-43297) in Dubbo. Due to a deserialization vulnerability in Dubbo’s hessian-lite, an unauthenticated attacker could exploit the vulnerability to remotely execute arbitrary code on the target system. Most Dubbo users use Hessian2 as the serialization/deserialization […]

Cutting-Edge Technologies Empowering Data Security Governance Within Enterprises

January 5, 2022 | Jie Ji

Compliance has seen radical changes in the requirements and driving force of data security and a broader category of data objects under data security protection. Application scenarios covered by data security will become more diversified, and data security requirements will cover all phases of the data lifecycle. In order to better cope with the challenges […]

Analysis of Log4j2 0-Day Vulnerability from the Perspective of Supply Chain

December 23, 2021 | Jie Ji

The outbreak of Log4j2 vulnerability has caused an uproar all over the world, with a wide range of influence and great harm second to none. The event is a typical supply chain event caused by open source software. The vulnerability of upstream software affects the products of downstream industries. The complex dependency expands the scope […]

3 Steps to Mitigate the Log4j2 Vulnerabilities Using NSFOCUS WAF

December 21, 2021 | Jie Ji

On December 9, NSFOCUS monitored the disclosure of the Apache Log4j2 remote code execution vulnerability (CVE-2021-44228) on the Internet. Apache Log4j2 is an open source Java logging framework, which is widely used in middleware, development frameworks and web applications to record log information. The vulnerability PoC has been made public on the Internet and can […]

ApacheLog4j Remote Code Execution Vulnerability (CVE-2021-44228, CVE-2021-45046, CVE-2021-45105) Threat Alert updated on Dec 20 2021

December 20, 2021 | Jie Ji

Overview The update involves (CVE-2021-45046) and (CVE-2021-45105) vulnerability information, scope of influence, product rules, official version and workaround. On December 9 2021, NSFOCUS CRET has detected the disclosure of Apachelog4j Remote Code Execution Vulnerability (CVE-2021-44228). Due to the recursive parsing of some functions of apachelog4j2, unauthenticated attackers can execute arbitrary code on target servers by […]

Microsoft December Security Updates for Multiple High-Risk Product Vulnerabilities

December 16, 2021 | Jie Ji

Overview On December 15th, NSFOCUS CERT monitored that Microsoft released the December security update patch, which fixed 67 security issues, involving widely used products such as Windows, Microsoft Office, Microsoft Visual Studio, and Microsoft PowerShell, including privilege escalation, remote Types of high-risk vulnerabilities such as code execution. Among the vulnerabilities fixed by Microsoft’s monthly update […]

ApacheLog4j Remote Code Execution Vulnerability (CVE-2021-44228) Threat Alert

December 15, 2021 | Jie Ji

Overview On December 9 2021, NSFOCUS CRET has detected the disclosure of Apachelog4j Remote Code Execution Vulnerability (CVE-2021-44228). Due to the recursive parsing of some functions of apachelog4j2, unauthenticated attackers can execute arbitrary code on target servers by sending a specially constructed data request packet. The vulnerability PoC has been disclosed on the Internet and […]