Buonasera lista Ho scaricato il tool messo a disposizione su GitHub https://github.com/speed47/spectre-meltdown-checker/blob/master/spectre-meltdown-checker.sh per controllare se il proprio sistema รจ disponibile.
Ho installato il l'ultimo pacchetto intel-microcode (datato 8 gennaio 2018), eppure mi ritrovo ancora il sistema vulnerabile nella parte iniziale del secondo attacco... Immagino che per mitigare gli altri attacchi debba aspettare almeno 4.5, giusto? SID # ./spectre-meltdown-checker-0.31/spectre-meltdown-checker.sh Spectre and Meltdown mitigation detection tool v0.31 Checking for vulnerabilities against running kernel Linux 4.14.0-1-amd64 #1 SMP Debian 4.14.2-1 (2017-11-30) x86_64 CPU is Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1' * Checking count of LFENCE opcodes in kernel: NO > STATUS: VULNERABLE (only 23 opcodes found, should be >= 70, heuristic to be improved when official patches become av ailable) CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2' * Mitigation 1 * Hardware (CPU microcode) support for mitigation * The SPEC_CTRL MSR is available: NO * The SPEC_CTRL CPUID feature bit is set: NO * Kernel support for IBRS: NO * IBRS enabled for Kernel space: NO * IBRS enabled for User space: NO * Mitigation 2 * Kernel compiled with retpoline option: NO * Kernel compiled with a retpoline-aware compiler: NO > STATUS: VULNERABLE (IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability ) CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3' * Kernel supports Page Table Isolation (PTI): NO * PTI enabled and active: NO * Checking if we're running under Xen PV (64 bits): NO > STATUS: VULNERABLE (PTI is needed to mitigate the vulnerability) Luca
