Questions tagged [spectre]

A side-channel vulnerability affecting modern microprocessors that perform branch prediction like Intel, AMD, ARM, Sparc and PowerPC allowing user processes to read memory belonging to other processes. Affects Linux, OS X, and Windows. Published in January 2018.

A side-channel vulnerability affecting modern microprocessors that perform branch prediction like Intel, AMD, Sparc V9, ARM and PowerPC CPUs allowing user processes to read memory belonging to other processes. Affects a wide range of OSes like Linux, OS X, AIX, Solaris and Windows. Published in January 2018.

The attack exploits speculative instruction execution that results from CPU branch prediction, coupled with traditional cache timing attacks in order to learn the contents of another process' memory space.

See full attack details at https://spectreattack.com

See our canonical question on this site at Meltdown and Spectre Attacks

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Spectre - Code Optimization/Branch Training concept

Trying to load "a" (lowecase a) speculatively using Spectre. Was hinted here: Spectre PoC - Paper based - opposite results that the problem why it does not load speculatively, could be not trained branch compiler optimization Here is the…
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Spectre PoC - Paper based - opposite results

After long discussion with this Question (Thanks for help!) Spectre Proof of Concept (PoC) Speculative Execution - Checking for value Came up with simple PoC based on Spectre paper. Seems to be consistent, also tried with other character and got…
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Extracting passwords from recycled machine using Spectre and Meltdown

With Spectre and Meltdown, hackers can extract your password from the CPU cache. If I give someone my computer without the hard drive, can he extract my passwords through the CPU?
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Are PCs really vulnerable to Spectre type attacks due to virtual user space addressing?

Are Windows OS user programs vulnerable to Spectre and the other recent Intel flaws? Wouldn't the virtual memory assignment in Windows prevent such attacks, or their usefulness? Sorry if I miss something, the attacks seem complex, and not even…
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