It was a relatively low-key year-ender for Microsoft’s Patch Tuesday, as the company’s monthly release of updates was relatively light in terms of noteworthy vulnerabilities. With that said, there were still a few notable vulnerabilities that were addressed.Read More
Patchwork (also known as Dropping Elephant) is a cyberespionage group known for targeting diplomatic and government agencies that has since added businesses to their list of targets. Patchwork’s moniker is from its notoriety for rehashing off-the-rack tools and malware for its own campaigns. The attack vectors they use may not be groundbreaking—what with other groups exploiting zero-days or adjusting their tactics—but the group’s repertoire of infection vectors and payloads makes them a credible threat.
We trailed Patchwork’s activities over the course of its campaigns in 2017. The diversity of their methods is notable—from the social engineering hooks, attack chains, and backdoors they deployed. They’ve also joined the Dynamic Data Exchange (DDE) and Windows Script Component (SCT) abuse bandwagons and started exploiting recently reported vulnerabilities. These imply they’re at least keeping an eye on other threats and security flaws that they can repurpose for their own ends. Also of note are its attempts to be more cautious and efficient in their operations.Read More
Many Linux distributions are at risk due to a recently disclosed flaw in systemd: a flaw in its DNS resolver could cause a denial-of-service attack on vulnerable systems. The vulnerability is exploited by having the vulnerable system send a DNS query to a DNS server controlled by the attackers. The DNS server would then return a specially crafted query, causing systemd to enter an infinite loop that pins the system’s CPU usage to 100%. This vulnerability was assigned CVE-2017-15908.Read More
Intel recently released a security advisory detailing several security flaws in its Management Engine (ME). The advisory provides critical ME, Trusted Execution Technology (TXT), and Server Platform Services (SPS) firmware updates for versions 8.X-11.X covering multiple CVE IDs, with CVSS scores between 6.7 and 8.2.
But there is also another notable vulnerability that can pose a bigger risk especially to corporate computers and networks: CVE-2017-5689, a privilege escalation flaw. While there are certain factors and/or triggers for this vulnerability, it can provide attackers administration access and enable them to remotely reset or power off the vulnerable system if exploited successfully. This security issue was divulged in the research, “Silent Bob is Silent.” Compared to the recently identified ME vulnerabilities, CVE-2017-5689 was assigned a CVSSv3 score of 9.8.Read More
October’s macOS security update contained a fix for a vulnerability that Trend Micro privately disclosed to Apple earlier this year. The vulnerability (designated as CVE-2017-13811), was in the fsck_msdos system tool. This tool checks for and fixes errors in devices formatted with the FAT filesystem, and is automatically invoked by macOS when a device using FAT (such as a USB disk or an SD card) is inserted.Read More