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.

Software development at the speed of business is a constant balance of tradeoffs, and managing the risk of open-source software is one of the most emerging prominent examples. This is driven home by high-profile supply chain attacks such as the ones on SolarWinds, Log4J, and MoveIt. Each of these examples represents a different type of abuse, including.

On November 2, 2023, SysAid was notified by Microsoft of a zero-day path traversal vulnerability allowing for remote code execution, which affects their on-premises ITSM solution. In the investigation conducted by SysAid, it was determined that the vulnerability was being actively exploited by a ransomware affiliate group known as Lace Tempest (DEV-0950), a group known for deploying the CL0P ransomware payload.

On November 6, 2023, Veeam published security hotfixes for two critical-severity vulnerabilities impacting Veeam ONE. At this time, Arctic Wolf has not identified active exploitation of either vulnerability, nor a published proof of concept (PoC) exploit. Although threat actors have not historically targeted Veeam ONE products, obtaining RCE on the monitoring and analytics platform will likely increase the potential for threat actors to create a working PoC exploit and attempt exploitation.

On November 4, 2023, QNAP published security advisories for two critical command injection vulnerabilities impacting multiple versions of QNAP operating systems and applications related to the vendor’s network-attached storage (NAS) devices. Both vulnerabilities have been given critical CVSS scores (CVE-2023-23368: 9.8, CVE-2023-23369: 9.0) and both can lead to unauthenticated, remote threat actors executing commands if successfully exploited.

The cloud offers major benefits to organizations, helping increase business agility, better serve their customers’ needs, and cut their costs. This is why the typical modern business now uses public, infrastructure-as-a-service (IaaS) cloud platforms for its major business and organizational functions. However, the cloud also introduces new risks that can increase your costs should you fall victim to a breach.