Spectre & Meltdown Checker – CPU芯片漏洞检查脚本Linux版

Summary of the CVEs in Spectre & Meltdown Checker

CVE-2017-5753 bounds check bypass (Spectre Variant 1)

• Impact: Kernel & all software
• Mitigation: recompile software and kernel with a modified compiler that introduces the LFENCE opcode at the proper positions in the resulting code
• Performance impact of the mitigation: negligible

CVE-2017-5715 branch target injection (Spectre Variant 2)

• Impact: Kernel
• Mitigation 1: new opcode via microcode update that should be used by up to date compilers to protect the BTB (by flushing indirect branch predictors)
• Mitigation 2: introducing “retpoline” into compilers, and recompile software/OS with it
• Performance impact of the mitigation: high for mitigation 1, medium for mitigation 2, depending on your CPU

CVE-2017-5754 rogue data cache load (Meltdown)

• Impact: Kernel
• Mitigation: updated kernel (with PTI/KPTI patches), updating the kernel is enough
• Performance impact of the mitigation: low to medium

There are some other more generic BASH scripts for security scanning like:

– unix-privesc-check – Unix/Linux User Privilege Escalation Scanner
– LinEnum – Linux Enumeration & Privilege Escalation Tool

You can download Spectre & Meltdown Checker here:

spectre-meltdown-checker.sh

原文地址：https://www.cnblogs.com/0day5/p/8269192.html