In 2019, An Trinh discovered two vulnerabilities, CVE-2019-9670 (XXE/SSRF) and CVE-2019-6980 (deserialization vulnerability), in Zimbra. As usual, An Trinh did not disclose any details. Luckily, Hans Martin Munch is more generous than An Trinh and has shared many interesting ideas. For example, he once advised using YouDebug to fix the...
Category: Blog
635Gbps DDoS attack spike During Covid-19 Pandemic
NSFOCUS cloud scrubbing center witnessed a torrent of DDoS attack traffic, with peak volume up to 634.8 Gbps. At 5 p.m. of May 20th, 2020, NSFOCUS SOC team detected an enormous DDoS attack – three IPs of a Hong Kong customer were hit by DDoS attacks and inbound traffic kept...
SecureCRT Memory Corruption Vulnerability (CVE-2020-12651) Threat Alert
Overview A memory corruption vulnerability (CVE-2020-12651) was fixed in the latest version 8.7.2 of SecureCRT. When the CSI function receives a large negative number as a parameter, it may allow the remote system to destroy the memory in the terminal process, resulting in the execution of arbitrary code or the...
IP Reputation Report-05172020
1. 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 May 17, 2020. 2. Top 10 countries in attack percentage: The Belarus is in first place.The Cape Verde is in the second...
DDoS Attack Landscape 8
Participation of IoT Devices in DDoS Attacks According to our observation, there were a total of more than 1,280,000 IP addresses of abnormal IoT devices around the world, accounting for 2.1% of all global IoT devices. Of all those abnormal IoT devices, 170,000 were involved in DDoS attacks, making up...
WebLogic Remote Code Execution Vulnerabilities (CVE-2020-2883 and CVE-2020-2884) Protection Solution
Overview Oracle released Critical Patch Update (CPU) for April 2020 that fixes multiple vulnerabilities of different risk levels, including two critical ones (CVE-2020-2883 and CVE-2020-2884) with a CVSS score of 9.8 that allow unauthenticated attackers with network access via T3 to compromise vulnerable Oracle WebLogic Server. Successful exploitation could result...
