- LINUX LITE MELTDOWN SPECTRE HOW TO
- LINUX LITE MELTDOWN SPECTRE UPDATE
- LINUX LITE MELTDOWN SPECTRE CODE
> STATUS: VULNERABLE (IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability)ĬVE-2017-5754 aka 'Meltdown' aka 'Variant 3'
* Kernel compiled with a retpoline-aware compiler: NO * Kernel compiled with retpoline option: NO
* Hardware (CPU microcode) support for mitigation: NO > STATUS: VULNERABLE (heuristic to be improved when official patches become available)ĬVE-2017-5715 aka 'Spectre Variant 2' * Checking count of LFENCE opcodes in kernel: NO (only 31 opcodes found, should be >= 70)
LINUX LITE MELTDOWN SPECTRE UPDATE
Using the Spectre & Meltdown Checker after switching to the 4.9.0-5 kernel version following Pasqualini answer because a security update is available to mitigate the cve-2017-5754 on debian Stretch: CVE-2017-5753 aka 'Spectre Variant 1'
LINUX LITE MELTDOWN SPECTRE HOW TO
How to mitigate the Spectre and Meldown vulnerabilities on Linux systems?įurther reading: Using Meltdown to steal passwords in real time. Model name : Intel(R) Core(TM) i3-3217U CPU 1.80GHz My system seem to be affected by the spectre vulnerability.
LINUX LITE MELTDOWN SPECTRE CODE
These updates will be announced in future Ubuntu Security Notices once they are available.Īs a proof-of-concept, JavaScript code was written that, when run in the Google Chrome browser, allows JavaScript to read private memory from the process in which it runs. To address the issue, updates to the Ubuntu kernel and processor microcode will be needed. The attack allows malicious userspace processes to read kernel memory and malicious code in guests to read hypervisor memory. It was discovered that a new class of side channel attacks impact most processors, including processors from Intel, AMD, and ARM. Technical details can be found on redhat website, Ubuntu security team. This flaw can be exploited remotely by visiting a JavaScript website. It affects Intel, AMD and ARM architectures. Earlier this month, he said: "I think somebody inside of Intel needs to really take a long hard look at their CPU's, and actually admit that they have issues instead of writing PR blurbs that say that everything works as designed.Security researchers have published on the Project Zero a new vulnerability called Spectre and Meltdown allowing a program to steal information from a memory of others programs. It's not the first time the Linux chief has criticised Intel's approach to the Spectre and Meltdown flaws.
However, others on the mailing list took a different view: "Certainly it's a nasty hack, but hey - the world was on fire and in the end we didn't have to just turn the datacentres off and go back to goat farming, so it's not all bad," said one. Since the flaws were discovered, the tech industry has been scrambling to fix them before they can be exploited. Spectre and Meltdown are design flaws in modern CPUs which could allow hackers to get around system protections on a wide range of PCs, servers, and smartphones, allowing attackers to access data including passwords, from memory. Torvalds added: "And I really don't want to see these garbage patches just mindlessly sent around."
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