Oracle July 2020 Critical Patch Update for All Product Families Threat Alert
julho 31, 2020
Overview
On July 14, 2020 local time, Oracle released its July 2020 Critical Patch Update (CPU), its own security advisories, and third-party security bulletins, which fix 443 vulnerabilities of varying severity levels. For details about affected products and available patches, see the appendix.
(mais…)IP Reputation Report-07262020
julho 30, 2020
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 July 26, 2020.
(mais…)2019 Cybersecurity Insights -13
julho 29, 2020
Cryptojacking Malware
In 2019, the pickup in cryptocurrency prices led to an increase in the number of cryptojacking malware families. Of all these families, Monero mining trojans still took a dominant place. EternalBlue and weak password cracking were the major methods for ransomware families to compromise large enterprises in financial and telecom sectors and spread themselves. At the same time, to defeat detection devices, cryptojacking malware families have been constantly upgraded to evolve into more variants that feature better stealth and a modular design.
(mais…)Alert: Digi Devices Affected by Ripple20 Can Be Used in Reflection Attacks
julho 28, 2020
Executive Summary
In recent years, more and more protocols that may cause UDP reflection attacks have come into our sight, such as CoAP[1], Ubiquiti[2], WS-Discovery[3], OpenVPN[4], and a certain DVR protocol[5]. These attack patterns are different from DNS, SSDP, NTP, Memcached, and other reflection attacks that are well familiar to us, posing certain challenges to distributed denial-of-service (DDoS) attack protection.
In June 2020, JSOF, an Israel-based cybersecurity company, revealed that 0-day vulnerabilities in the Treck TCP/IP protocol stack might affect hundreds of millions of devices globally. After analyzing the published whitepapers, we find that the devices produced by Digi, one of the affected vendors, use the Advanced Digi Discovery Protocol (ADDP) for device discovery. ADDP uses 224.0.5.128 as a multicast address and 2362 as its port. But during implementation, ADDP also supports unicast. Besides, it is possible to spoof source IP addresses of UDP packets. Therefore, Digi devices are at risk of being used for reflection attacks.
(mais…)Botnet Trend Report -3
julho 27, 2020
Botnets can pose a variety of cyber threats. NSFOCUS Security Labs has been focused on the capture, track, and study of botnet-related threats. In 2019, the Labs further upgraded its capturing and tracking techniques and capabilities and expanded its scope of interest to cover more diverse threats, including cryptojacking, ransomware attacks, data theft by banking Trojans, and adware bundling. Besides, the Labs took up research on mobile platforms, which were quite a mess in terms of security.
(mais…)Adobe July 2020 Security Updates Threat Alert
julho 26, 2020
Overview
On July 14, 2020 local time, Adobe released its July security updates to fix multiple vulnerabilities in its various products, including Adobe Creative Cloud Desktop Application, Adobe Media Encoder, Adobe Genuine Service, Adobe ColdFusion, and Adobe Download Manager.
(mais…)Microsoft’s July 2020 Patches Fix 124 Security Vulnerabilities Threat Alert
julho 25, 2020
Overview
Microsoft released July 2020 security updates on Tuesday that fix 124 vulnerabilities ranging from simple spoofing attacks to remote code execution in various products, including .NET Framework, Azure DevOps, Internet Explorer, Microsoft Edge, Microsoft Graphics Component, Microsoft JET Database Engine, Microsoft Malware Protection Engine, Microsoft Office, Microsoft Office SharePoint, Microsoft OneDrive, Microsoft Scripting Engine, Microsoft Windows, Open Source Software, Skype for Business, Visual Studio, Windows Hyper-V, Windows IIS, Windows Kernel, Windows Shell, Windows Subsystem for Linux, Windows Update Stack, and Windows WalletService.
(mais…)F5 BIG-IP TMUI Remote Code Execution Vulnerability (CVE-2020-5902) Threat Alert
julho 24, 2020
Vulnerability Description
Recently, NSFOCUS detected that F5 had updated its security advisory on the Traffic Management User Interface (TUMI) remote code execution vulnerability (CVE-2020-5902). The affected 15.x versions were changed to 15.0.0–15.1.0, and bypassable workarounds and validation methods were updated. By accessing the TUMI via the BIG-IP management port or their own IP addresses, unauthenticated attackers could craft malicious requests to obtain the privileges of target servers. The vulnerability has a CVSS score of 10. Currently, msf has integrated the exploit of the vulnerability. Users affected by the vulnerability are advised to take measures as soon as possible.
(mais…)IP Reputation Report-07192020
julho 23, 2020
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 July 19, 2020.
2019 Cybersecurity Insights -12
julho 22, 2020
Ransomware
In 2019, ransomware was still a major type of threats that haunted people around the world. The most prominent families were GlobeImposter, GandCrab, and WannaCry, which were extremely active and had far more variants than others. According to NSFOCUS Security Labs’ observation, the number of ransomware families and variants increased sharply in four months from May to August 2019, which was somewhat attributable to the soaring prices of major cryptocurrency types. These families used diverse compromise methods to attack a wide variety of sectors, posing a severe threat to organizations’ and individuals’ data. Through ongoing monitoring, NSFOCUS Security Labs finds that the following trends of ransomware took shape in 2019:
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