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 September 08, 2019. Top 10 countries in attack percentage: The Laos is in first place. The Palestine is in the second place. The country China (CN) is […]
4.4 Satan: Evolving Ransomware In late April 2018, MalwareHunterTeam reported seeing new ransomware that leveraged EternalBlue to propagate. Through analysis, we found that the ransomware was based on a new version (dubbed V2) of Satan, a ransomware family launched in 2017. The ransom demanded in this version increased from 0.1 to 0.3 Bitcoin. At the […]
Vulnerability Overview On August 14, 2019, Beijing time, Microsoft released remote desktop (RDP) service fixes and patches for a series of vulnerabilities, including two critical remote code execution (RCE) vulnerabilities (CVE-2019-1181 and CVE-2019-1182). Similar to the BlueKeep vulnerability (CVE-2019-0708) previously fixed, vulnerabilities disclosed this time have characteristics of worms. In other words, attackers could exploit […]
Overview Recently, a security researcher disclosed a heap-based buffer overflow vulnerability (CVE-2019-14378) in the SLiRP networking backend in the QEMU emulator. An attacker could exploit this vulnerability to crash the QEMU process on a host machine, resulting in a denial of service, or possibly execute arbitrary code with privileges of the QEMU process.
Vulnerability Overview Ghostscript is a suite of software based on an interpreter for Adobe System’s PostScript and Portable Document Format (PDF) page description languages. It is widely used as a raster image processor (RIP) for raster computer printers. Currently, it has been ported from Linux to other operating systems, including UNIX, Mac OS X, VMS, […]
4.3 XMRig: Cryptomining For Fun and Profit Cryptomining by botnets has gained popularity in the past two years. Unlike other common malicious activities like DDoS, ransomware attacks, and confidential information theft, cryptomining has some unique characteristics: 1. Predictable earnings. Cryptominers are good at hiding their presence by controlling their CPU usage within 30%–40%. Based on […]
Overview On August 13, local time, a researcher from a vulnerability laboratory (vxrl team) disclosed a remote code execution vulnerability (CVE-2019-14422) in TortoiseSVN. The URI handler of TortoiseSVN (Tsvncmd:) allows a customized diff operation on Excel workbooks. This vulnerability could be used to open remote workbooks without protection from macro security settings to execute arbitrary […]
Vulnerability Description On August 28, 2019, Artifex submitted “Bug 701446: Avoid divide by zero in shading” on the master branch of Ghostscript and announced remediation of four -dSAFER sandbox bypass vulnerabilities. -dSAFER is a security sandbox used by Ghostscript for prevention of insecure PostScript operations.
Overview Recently, Ghostscript announced the discovery of the -dSAFER sandbox bypass vulnerability (CVE-2019-10216). The .buildfont1 procedure in Ghostscript does not properly restrict privileged calls, which allows attackers to escalate privileges and access files beyond the restricted domain.
