Adobe disclosed that a Flash zero-day was being exploited in targeted attacks against Windows users. The critical vulnerability was discovered and independently reported by several security firms. Successful exploitation of the vulnerability allows arbitrary code execution which can ultimately lead to an attacker assuming full system control.
After more than four years with no weaponized exploits for Adobe Acrobat Reader, researchers at ESET identified a weaponized PDF that allows attackers to execute arbitrary code on the targeted machine and eventually assume full system control. The PDF exploits two previously unknown vulnerabilities, Acrobat Reader vulnerability CVE-2018-4990 and a privilege escalation vulnerability in Microsoft Windows, CVE-2018-8120.
Adobe Reader has a built-in sandbox feature that usually makes exploitation difficult. By combining vulnerabilities, this attack achieves code execution and then bypasses the sandbox protection to fully compromise the targeted system.
In April, researchers at Qihoo 360 Core Security Division discovered a VBScript vulnerability actively exploited in targeted attacks. Since then, it has appeared in additional attack campaigns. The vulnerability, CVE-2018-8174, dubbed "Double Kill", is significant on several counts.
On March 21,2018, Morphisec Labs began investigating the compromised website of a leading Hong Kong Telecommunications company after being alerted to it by malware hunter @PhysicalDrive0. The investigation, conducted by Morphisec researchers Michael Gorelik and Assaf Kachlon, determined that the Telecom group's corporate site had indeed been hacked. Attackers added an embedded Adobe Flash file that exploits the Flash vulnerability CVE-2018-4878 on the main home.php page.
Two days ago, researchers at TarLogic published a proof-of-concept APT that leverages CVE-2017-11826, a Microsoft Office 0-day vulnerability existing in all Office versions. Microsoft issued a patch for the vulnerability in October, however many systems still remain at risk.