You will have no doubt read this morning that two separate security flaws have been discovered by security analysts which potentially impact a large number of devices. Deserialization issues also affect Ruby, not just Java, PHP, and.
#SPECTER MELTDOWN WINDOWS#
Microsoft patches Windows zero-day used by multiple cyber-espionage groups.The research team has previously stated many times on Twitter that countless of Meltdown and Spectre variation attacks are waiting to be discovered. Today's findings aren't particularly new, at least for the security community. Among its authors are the academics who discovered the original Meltdown and Spectre attacks, and some of their variations.
The research paper published today is the result of months of research. In their research paper, entitled " A Systematic Evaluation of Transient Execution Attacks and Defenses," the research team proposes their own set of defenses, that they argue could stop the attacks they've detailed. Protecting customers continues to be a critical priority for us and we are thankful to the teams at Graz University of Technology, imec-DistriNet, KU Leuven, & the College of William and Mary for their ongoing research The vulnerabilities documented in this paper can be fully addressed by applying existing mitigation techniques for Spectre and Meltdown, including those previously documented here, and elsewhere by other chipmakers. Responding to the research team's claims, Intel provided the following statement, suggesting the mitigations researchers tested might have not been applied correctly. In an attempt to understand how this plethora of Spectre-like attacks worked and what parts of the CPU's internal architecture has been investigated until now, researchers re-classified and renamed the Spectre attacks based on the internal CPU operation they target, and then based on the mistraining mechanism they bypass. Past attacks that have grabbed headlines in tech news outlets include SpectreNG, SpectreRSB, or NetSpectre, just to name a few. In fact, the safety checks of said best practices actually increase the attack surface and may make applications more susceptible to Spectre.Įven more than with Meltdown, new variations of Spectre attacks have popped up online on a regular basis. It allows an attacker to trick error-free programs, which follow best practices, into leaking their secrets. Spectre breaks the isolation between different applications. The original Spectre vulnerability was described as follows:
Meltdown-SS - tried to exploit out-of-limit segment accesses.Meltdown-SM - tried to exploit the supervisor mode access prevention (SMAP) mechanism.Meltdown-DE - tried to exploit division (by zero) errors.Meltdown-AC - tried to exploit memory alignment check exceptions.They also tried and failed to exploit other Meltdown attacks that targeted the following internal CPU operations: Meltdown-PK - bypasses memory protection keys on Intel CPUs.Meltdown-BR - exploits an x86 bound instruction on Intel and AMD.
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