Questions tagged [speculative-store-bypass]

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VirtualBox & Spectre V4

I found the following ticket in the VirtualBox issue tracker: https://www.virtualbox.org/ticket/17987 The important (in the context of this question) part is that the guest OS (Debian) running in ...
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0answers
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Software mitigation for variant 3a (rogue system register read) and variant 4 (speculative store bypass)

AFAIK, all mitigable meltdown / spectre variants have software mitigation except for variant 3a and 4. Why is this the case? For variant 4, a straightforward software mitigation is to place lfence ...
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2answers
2k views

Are new AMD processors more secure than Intel ones?

Since the discovery of Meltdown and Spectre, CPU security has been compromised and trust to the main manufacturers reduced, particularly Intel. 8 months later I wonder, what CPUs are more secure at ...
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1answer
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What is the attack vector for CVE-2018-3639 Speculative Store Bypass?

We use Web Application deployed on a CentOS server. Can the attack will be performed via a browser? Or the attacker need a physical access to the CentOS server? I cannot understand the attack vector ...