Blog

macOS 10.15.1 Update Fixes Kernel Prelinking

The initial release of macOS Catalina caused trouble for a lot of Little Snitch users. Updating an existing version of Little Sntich would almost always lead to a dreaded “Version Mismatch” error being shown after restarting your Mac. We documented our findings and contacted Apple about this issue.

Thankfully, the macOS 10.15.1 update released today fixes the issue. After installing this update, you can install and update Little Snitch and everything should work as expected.

How Kernel Prelinking Works on macOS Catalina (or not)

Update on October 30, 2019: This issue is fixed in macOS 10.15.1.In this article we’d like to outline some technical details about how the installation of a kernel extension works on macOS Catalina, about potential pitfalls »

The Story Behind CVE-2019-13013

This blog post targets fellow software developers. It’s a story of how it could happen that we shipped a version of Little Snitch with a serious vulnerability and, more importantly, what we can learn from it. It all began »

All That Glitters is not Gold

In February 2019, security experts from Trend Micro published an article about a new variety of malware. This particular attempt gained additional attention because it was the first time that cybercriminals tried to run an .exe file (Windows executable) on »

About the Issues with Code Signing Checks in Little Snitch

A security vulnerability was recently disclosed by Josh Pitts, a security researcher at Okta. This vulnerability affects third-party macOS apps that check the code signatures of other apps by tricking them into treating a maliciously crafted fat binary as coming »

Archive