On November 21, 2023, ownCloud published advisories on three security vulnerabilities. The most severe of these vulnerabilities is an information disclosure vulnerability tracked as CVE-2023-49103 (CVSS: 10). The vulnerability is within the “graphapi” extension and is due to a library it relies on. The library provides a URL that when accessed discloses configuration details regarding the PHP environment including environment variables.

On November 23, 2023, Arcserve released Arcserve Unified Data Protection (UDP) 9.2 to address three vulnerabilities, including a critical-severity remote code execution (RCE) vulnerability. Subsequently on November 27, 2023, Tenable published public Proof of Concepts (PoCs) for these vulnerabilities, as they were the ones who initially disclosed these vulnerabilities to Arcserve back in August 2023.

America’s cybersecurity experts are bracing for a fresh wave of attack s as the 2024 Presidential election approaches. With nation-states and threat actors launching cyber attacks with increasing regularity and success, and with critical infrastructure and nothing less than the sanctity of our democracy at stake, the U.S. Department of Defense (DoD) continues to tighten the security4 controls not just within its own agency but with all third-party contractors with whom it does business.

Back in 2013, Gartner’s Anton Chuvakin set out to name a new set of security solutions to detect suspicious activity on endpoints. After what he called “a long agonizing process that involved plenty of conversations with vendors, enterprises, and other analysts” Chuvakin came up with this phrase: endpoint threat detection and response. Since then, this moniker has been shortened to endpoint detection and response or EDR. But as the name got smaller, the market got bigger.

Arctic Wolf has recently worked multiple incident response cases where we have observed ransomware groups exploiting CVE-2023-41265, CVE-2023-41266 & CVE-2023-48365 to gain initial access. On August 29, 2023, Qlik published a support article detailing two vulnerabilities which when successfully exploited in tandem could lead to an unauthenticated threat actor achieving remote code execution (RCE). CVE-2023-41266.

Arctic Wolf Labs has observed a new Cactus ransomware campaign which exploits publicly-exposed installations of Qlik Sense, a cloud analytics and business intelligence platform.[1] Based on available evidence, we assess that all vulnerabilities exploited were previously identified by researchers from Praetorian [2,3]. For more information on these vulnerabilities, see the advisories published by Qlik (CVE-2023-41266, CVE-2023-41265, and CVE-2023-48365) as well as our Security Bulletin.

On August 10, 2023, CrushFTP released an advisory regarding a vulnerability affecting versions of CrushFTP lower than 10.5.1. Since then, the vulnerability has been tracked as CVE-2023-43177 and the security researchers at Converge published a blog sharing their findings on November 16. CVE-2023-43177 is a mass assignment vulnerability related to how CrushFTP parses request headers for the AS2 protocol. Successful exploitation could lead to unauthenticated, remote code execution (RCE).

Beginning on at least October 20, 2023, a North Korea-linked threat actor, tracked as Diamond Sleet by Microsoft, leveraged a modified CyberLink installer to compromise victim assets. CyberLink Corp. is a Taiwan-based multimedia software company that develops media editing and recording software.

This spring, Australian authorities were able to arrest a cybercrime syndicate that had conducted BEC attacks on at least 15 individuals and organizations with stolen profits totaling $1.7 million (USD). If those numbers seem shocking, they’re part of a growing upward trend of BEC attacks that shows no sign of slowing down.