CPU攻撃ã®æ–°ãŸãªæ‰‹æ³•ã€ŒBranchScopeã€ã€Intel製CPUã§å®Ÿè¨¼CPU攻撃ã®æ–°ãŸãªæ‰‹æ³•ã€ŒBranchScopeã€ã€Intel製CPUã§å®Ÿè¨¼ï¼šã‚«ãƒ¼ãƒã‚®ãƒ¼ãƒ¡ãƒãƒ³å¤§å¦ãªã©ã®ç ”究ãƒãƒ¼ãƒ ãŒç™ºè¡¨ 米カーãƒã‚®ãƒ¼ãƒ¡ãƒãƒ³å¤§å¦ãªã©ã®ç ”究ãƒãƒ¼ãƒ ãŒç™ºè¡¨ã—ãŸã€ŒBranchScopeã€ã§ã¯ã€1月ã«ç™ºè¦šã—ãŸã€ŒSpectreã€ã¨åŒæ§˜ã«ã€ã‚µã‚¤ãƒ‰ãƒãƒ£ãƒãƒ«æ”»æ’ƒã‚’仕掛ã‘ã¦ã‚»ãƒ³ã‚·ãƒ†ã‚£ãƒ–ãªãƒ‡ãƒ¼ã‚¿ã‚’æµå‡ºã•ã›ã‚‹ã€‚ 米カーãƒã‚®ãƒ¼ãƒ¡ãƒãƒ³å¤§å¦ãªã©ã®ç ”究ãƒãƒ¼ãƒ ãŒã€Intelãªã©ã®CPUã®è„†å¼±æ€§ã‚’çªãæ–°ãŸãªæ”»æ’ƒæ‰‹æ³•ã€ŒBranchScopeã€ã«é–¢ã™ã‚‹è«–文を発表ã—ãŸã€‚1月ã«ç™ºè¦šã—ãŸã€ŒSpectreã€ã¨å‘¼ã°ã‚Œã‚‹è„†å¼±æ€§ã¨åŒæ§˜ã®ä»•çµ„ã¿ã§ã€Intelã®CPUã‚„ã€ã‚»ã‚ュリティ機能ã®ã€ŒSoftware Guard Extensions（SGX）ã€ã«å¯¾ã—ã¦æ”»æ’ƒãŒé€šç”¨ã™ã‚‹ã“ã¨ã‚’実証ã—ãŸã¨ã—ã¦ã„る。 è«–æ–‡ã«ã‚ˆã‚‹ã¨ã€BranchScope攻撃ã§ã¯ã€ç¾ä»£ã®CPUãŒæ€§èƒ½å‘上ã®ãŸã‚ã«å®Ÿè£…ã—ã¦ã„る分å²äºˆæ¸¬ãƒ¦ãƒ‹ãƒƒãƒˆï¼ˆBranch Predic
ã€å›³è§£ã€‘CPUã®è„†å¼±æ€§[Spectre/Meltdown]ã¨æŠ•æ©Ÿçš„実行ã®ä»•çµ„ã¿ã€œåˆ†å²äºˆæ¸¬ã¨ã‚¢ã‚¦ãƒˆã‚ªãƒ–オーダー実行〜![ã€å›³è§£ã€‘CPUã®è„†å¼±æ€§[Spectre/Meltdown]ã¨æŠ•æ©Ÿçš„実行ã®ä»•çµ„ã¿ã€œåˆ†å²äºˆæ¸¬ã¨ã‚¢ã‚¦ãƒˆã‚ªãƒ–オーダー実行〜](https://cdn-ak-scissors.b.st-hatena.com/image/square/8d304b3c0d7227567b9aaf4d57b2fdca1cb4ad44/height=288;version=1;width=512/https%3A%2F%2Fmilestone-of-se.nesuke.com%2Fwp-content%2Fuploads%2F2018%2F01%2Fprogram-mem-01.png)
{{#tags}}- {{label}}
{{/tags}}