Nethammer attack technique is the first truly remote Rowhammer attack that doesnt require a single attacker-controlled line of code on the targeted system. Rowhammer is classified as a problem affecting some recent DRAM devices in which repeatedly accessing a row of memory can cause bit flips in adjacent rows, this means that theoretically, an attacker can change any value of the bit in the memory. The issue has been known at least since 2012, the first attack was demonstrated in 2015 by white hat hackers at Google Project Zero.”]
Source: https://securityaffairs.co/wordpress/72624/hacking/nethammer-rowhammer-attack.html