Security News
Apple on Wednesday revised its documentation pertaining to its mercenary spyware threat notification system to mention that it alerts users when they may have been individually targeted by such...
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Your profile can be used to present content that appears more relevant based on your possible interests, such as by adapting the order in which content is shown to you, so that it is even easier for you to find content that matches your interests. Content presented to you on this service can be based on your content personalisation profiles, which can reflect your activity on this or other services, possible interests and personal aspects.
The threat resides in the chips' data memory-dependent prefetcher, a hardware optimization that predicts the memory addresses of data that running code is likely to access in the near future. The breakthrough of the new research is that it exposes a previously overlooked behavior of DMPs in Apple silicon: Sometimes they confuse memory content, such as key material, with the pointer value that is used to load other data.
Your profile can be used to present content that appears more relevant based on your possible interests, such as by adapting the order in which content is shown to you, so that it is even easier for you to find content that matches your interests. Content presented to you on this service can be based on your content personalisation profiles, which can reflect your activity on this or other services, possible interests and personal aspects.
The newly exposed GoFetch vulnerability affecting Apple's M1, M2 and M3 chips lets an attacker exfiltrate secret keys from cryptographic applications on a targeted system. DMPs - in contrast to classical prefetchers that only store the memory access pattern - "Also take into account the contents of data memory directly to determine what to prefetch," as written in the publication from Boru Chen, Yingchen Wang, Pradyumna Shome, Christopher W. Fletcher, David Kohlbrenner, Riccardo Paccagnella and Daniel Genkin that reveals all of the details about the GoFetch vulnerability.
The GoFetch vulnerability found on Apple M-series and Intel Raptor Lake CPUs has been further unpacked by the researchers who first disclosed it. DMPs are present on all Apple M-series CPUs and Intel's Raptor Lake processors, and the dedicated website for GoFetch now shows how exactly the exploit is carried out.
A new security shortcoming discovered in Apple M-series chips could be exploited to extract secret keys used during cryptographic operations. Dubbed GoFetch, the vulnerability relates to a...
Apple is having its own Meltdown/Spectre moment with a new side-channel vulnerability found in the architecture of Apple Silicon processors that gives malicious apps the ability to extract cryptographic keys. "We reverse-engineered DMPs on Apple m-series CPUs and found that the DMP activates data loaded from memory that 'looks like' a pointer," the team say in the paper.
A new side-channel attack called "GoFetch" impacts Apple M1, M2, and M3 processors and can be used to steal secret cryptographic keys from data in the CPU's cache. The attack targets constant-time cryptographic implementations using data memory-dependent prefetchers found in modern Apple CPUs.