RAMBleed is based on Rowhammers vulnerability and can be used to break the promise of secure storage of RAM modules. Researchers say the attack can break the memory confidentiality of ECC memory, even those containing the ECC mechanism (Error Correction Code) Researchers were able to read an RSA-2048 key on a server running OpenSSH 7.9, the latest version at the time of testing. The attack measured a rate of 0.3 bits per second and an accuracy of 82% to obtain the complete data.”]
Source: https://hackercombat.com/rambleed-attack-can-not-just-alter-but-steal-sensitive-data/