Qualys is actively tracking threats which target containers. In our recent analysis, we have identified a few docker instances executing a malware which we term as “LibMiner”. This malware has the capability to deploy and execute Cryptominer. It uses a unique technique for lateral movement across the containers as well as Linux systems, executing on unprotected Redis servers and initiating mining on them. The malware has the ability to protect its termination, thus making it impossible to gain control over it. This blog post uncovers the unique techniques and tactics used by LibMiner.
In our weekly roundup of InfoSec happenings, we start, as has often been the case this year, with concerning Meltdown / Spectre news — this time involving Microsoft — and also touch on a password hack at Under Armour, a WannaCry infection at Boeing, and a severe Drupal vulnerability.
Microsoft patches its Meltdown patch, then patches it again
In an instance of the cure possibly being worse than the disease, a Microsoft patch for Meltdown released in January created a gaping security hole in certain systems in which it was installed.
It took Microsoft two tries to fix the issue, which affects Windows 7 (x64) and Windows Server 2008 R2 (x64) systems. The company thought it had solved the vulnerability (CVE-2018-1038) with a scheduled patch last Tuesday, but then had to rush out an emergency fix two days later.
Security researcher Ulf Frisk, who discovered the vulnerability, called it “way worse” than Meltdown because it “allowed any process to read the complete memory contents at gigabytes per second” and made it possible to write to arbitrary memory as well.
“No fancy exploits were needed. Windows 7 already did the hard work of mapping in the required memory into every running process,” Frisk wrote. “Exploitation was just a matter of read and write to already mapped in-process virtual memory. No fancy APIs or syscalls required — just standard read and write.”