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Type1 Font Parsing 0-day Remote Code Execution Vulnerability Threat Alert

April 3, 2020 | Mina Hao

Overview On March 23, local time, Microsoft released an out-of-band security advisory ADV200006 to address two critical 0-day vulnerabilities in Adobe Type Manager Library. A vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a crafted multi-master font, namely, the Adobe Type 1 PostScript format. An attacker could exploit the […]

IP Reputation Report-03292020

April 2, 2020 | Mina Hao

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 March 29, 2020.

DDoS Attack Landscape 2

April 1, 2020 | Mina Hao

DDoS Attack Counts and Peak Sizes Distribution of Peak Sizes From the monthly data in the last three years, the number of large-scale attacks (> 100 Gbps) soared in 2018 and then fluctuated at a high level over a two-year period. In 2017, the number of such attacks reached 11,800, only 48% of the number […]

Spring Cloud Config Server Path Traversal (CVE-2020-5405) Threat Alert

March 31, 2020 | Mina Hao

Vulnerability Description Security researchers from NSFOCUS found a directory traversal vulnerability (CVE-2020-5405) in the Spring Cloud Config component. On February 26, Spring released a security bulletin to announce this vulnerability and also expressed appreciation to NSFOCUS.

Windows SMBv3 Remote Code Execution Vulnerability (CVE-2020-0796) Technical Analysis and Solution

March 30, 2020 | Mina Hao

Overview On March 11, Beijing time, Microsoft released March 2020 updates to fix vulnerabilities among which is a remote code execution vulnerability in Microsoft Server Message Block 3.1.1 (SMBv3) indicated in a security bulletin released earlier. This vulnerability exists in the way the Microsoft SMBv3 protocol handles certain requests. An attacker could exploit this vulnerability […]

Microsoft SMBv3 Remote Code Execution Vulnerability (CVE-2020-0796) Threat Alert

March 29, 2020 | Mina Hao

Overview On March 11, Beijing time, Microsoft released March 2020 updates to fix vulnerabilities among which is a remote code execution vulnerability in Microsoft Server Message Block 3.1.1 (SMBv3) indicated in a security bulletin released earlier. Instead of a security patch, Microsoft currently provides a workaround for users to mitigate this vulnerability.

Linux System PPPD Remote Code Execution Vulnerability (CVE-2020-8597) Threat Alert

March 27, 2020 | Mina Hao

Vulnerability Description On March 6, the United States Computer Emergency Readiness Team (US-CERT) release a security bulletin to announce a 17-year-old remote code execution vulnerability in the PPP daemon (pppd). This vulnerability affects nearly all Linux-based operating systems and network device firmware. This vulnerability is a buffer overflow vulnerability (CVE-2020-8597), with a CVSS score of […]

IP Reputation Report-03222020

March 26, 2020 | Mina Hao

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 March 22, 2020.

DDoS Attack Landscape 1

March 25, 2020 | Mina Hao

Executive Summary In 2019, the average peak size of DDoS attacks rose steadily from 2018 to 42.9 Gbps, indicating that techniques employed by large and medium scale attacks are advancing year by year. After a sharp rise in 2018, super-sized DDoS attacks (> 300 Gbps) were relatively stabilizing in 2019, increasing slightly by around 200.

V8 Type Confusion Vulnerability (CVE-2020-6418) Threat Alert

March 24, 2020 | Mina Hao

Vulnerability Description On February 25, security updates were released for Google Chrome and Microsoft Edge. The open-source JavaScript and WebAssembly engines in V8 in Google Chrome before 80.0.3987.122 and Microsoft Edge browser before 80.0.361.62 are prone to a type confusion vulnerability (CVE-2020-6418), which allows attackers to access data in an unauthorized way, thereby executing malicious […]