This month’s Patch Tuesday fixes a JET Database Engine Vulnerability (CVE-2018-8423) that Trend Micro’s Zero Day Initiative (ZDI) disclosed last September together with a proof of concept code.
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On September 18, 2018, more than a month after we published a blog revealing the details of a use-after-free (UAF) vulnerability CVE-2018-8373 that affects the VBScript engine in newer Windows versions, we spotted another exploit that uses the same vulnerability. It’s important to note that this exploit doesn’t work on systems with updated Internet Explorer versions.
Read More September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Twitter and has been seen actively used in malicious campaigns as early as September 5.
Read More This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
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We discovered a new exploit kit we named Underminer that employs capabilities used by other exploit kits to deter researchers from tracking its activity or reverse engineering the payloads. Underminer delivers a bootkit that infects the system’s boot sectors as well as a cryptocurrency-mining malware named Hidden Mellifera. Underminer transfers malware via an encrypted transmission control protocol (TCP) tunnel and packages malicious files with a customized format similar to ROM file system format (romfs). These make the exploit kits and its payload challenging to analyze.
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