Spooked by the recent string of vulnerabilities in critical components like systemd, Mayank Sharma is looking beyond Linux to protect his cat GIFs.
The HardenedBSD project is the combination of the repositories of two developers individually working to strengthen the security of FreeBSD. They decided to collaborate in order to add various exploit mitigations and well-known security-hardening mechanisms to the standard FreeBSD release. One of the first few notable protections included a working implementation of the grsecurity patch for Linux, and the Address Space Layout Randomisation feature popularly known as ASLR. Thanks to ASLR, an attacker will not be able to take advantage of even a known vulnerability in the target installation. Although there have been attempts to implement ASLR in earlier BSDs, HardenedBSD claims its efforts are the strongest of the lot. In fact, OPNsense – a software firewall appliance based on FreeBSD – switched to HardenedBSD’s ASLR implementation in 2016.
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