Exploiting CPU Clock Modulation for Covert Communication Channel

arXiv:2404.05823v1 Announce Type: new
Abstract: Covert channel attacks represent a significant threat to system security, leveraging shared resources to clandestinely transmit information from highly secure systems, thereby violating the system's security policies. These attacks exploit shared resources as communication channels, necessitating resource partitioning and isolation techniques as countermeasures. However, mitigating attacks exploiting modern processors' hardware features to leak information is challenging because successful attacks can conceal the channel's existence. In this paper, we unveil a novel covert channel exploiting the …

arxiv attacks channel clock communication countermeasures covert covert channel cpu cs.cr exploit exploiting information isolation policies resource resources security security policies system systems system security techniques threat