L1 Terminal Fault /Foreshadow Attack aka L1TF Attack

A new class of hardware vulnerabilities have been discovered in Intel processors. Upon exploitation a malicious code can achieve information disclosure that can be used for further exploitation .This vulnerability affects Intel Core processors and Intel Xeon processors, please check here for a complete list of affected processors . Intel has addressed this issue in INTEL-SA-00161. … Continue reading “L1 Terminal Fault /Foreshadow Attack aka L1TF Attack”

Speculative Execution Vulnerability

In January 2018 a new class of vulnerabilities were discovered in speculative execution. They were termed Spectre and Meltdown. Adding to this list, two new vulnerabilities have been disclosed. They affect Intel,ARM and AMD processors. Please refer to their respective advisories for affected processor models. Rogue System Register Read: A new subvariant of Rogue Data Cache … Continue reading “Speculative Execution Vulnerability”

Out-of-Order Execution Side-Channel attack [Spectre/Meltdown]

A flaw in Out-of-Order execution mechanism allows user level programs to leak addresses of kernel and process memory space. This vulnerability can be exploited to bypass KASLR as well as CPU security features like SMAP,SMEP,NX and PXN. It can be exploited to bypass OS process isolation. The issue affects processors from Intel, AMD ,ARM, Samsung and … Continue reading “Out-of-Order Execution Side-Channel attack [Spectre/Meltdown]”