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ionis id:ionis

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æœ¬å½“ã«ã‚ã‹ã‚‹ Spectre ã¨ Meltdown
1. æœ¬å½“ã«ã‚ã‹ã‚‹ Spectre ã¨ Meltdown å·ç”°è£•è²´ @hktechno 1 ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒ»ã‚ãƒ£ãƒ³ãƒ—å…¨å›½å¤§ä¼š2018 è¬›ç¾©è³‡æ–™ URL: https://goo.gl/uTwX2c 2. è‡ªå·±ç´¹ä»‹ @hktechno å·ç”° è£•è²´ (ã‹ã‚ãŸ ã²ã‚ãŸã‹) â— LINE æ ªå¼ä¼šç¤¾ é–‹ç™º1ã‚»ãƒ³ã‚¿ãƒ¼ LINE é–‹ç™º1å®¤ â—‹ ãƒ¡ãƒƒã‚»ãƒ³ã‚¸ãƒ£ãƒ¼ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã®é–‹ç™º â—‹ ä¸»ã«ã€ã‚¹ã‚¿ãƒ³ãƒ—ãƒ»çµµæ–‡å—ãƒ»ç€ã›ã‹ãˆã€ãŸã¾ã« IoT â— è‡ªä½œ CPU é–‹ç™ºã«ãƒãƒžã£ã¦ã„ãŸ â—‹ ã‚¢ã‚¦ãƒˆãƒ»ã‚ªãƒ–ãƒ»ã‚ªãƒ¼ãƒ€ãƒ¼å®Ÿè¡Œã§ãã‚‹è‡ªä½œ CPU â—‹ ä¸»ã«ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚’ä½œã£ã¦ã„ãŸ â—‹ http://open-arch.org/ â—‹ http://amzn.asia/gtThKbh 2 3. çµŒæ´ï¼Ÿ 2008å¹´ ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒ»ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚ãƒ£ãƒ³ãƒ—å‚åŠ 2009, 2010, 2012 ãƒãƒ¥ãƒ¼ã‚¿ãƒ¼, 2015 è¬›å¸« 2009å¹´ ç‘æ³¢å¤§å¦
ionis 2018/08/20
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Meltdown/Spectreã®è„†å¼±æ€§ã€ãƒªã‚¹ã‚¯ã€å¯¾ç–
3. Meltdown/Spectreã¨ã¯ï¼Ÿ â€¢â€œSpeculative Execution Side Channel Attackâ€ ï¼ˆæŠ•æ©Ÿå®Ÿâ¾ã®ã‚µã‚¤ãƒ‰ãƒãƒ£ãƒ³ãƒ«æ”»æ’ƒï¼‰ ã¨ã„ã†æ–°ã—ã„è„†å¼±æ€§ã®ã‚¸ãƒ£ãƒ³ãƒ«ã®ï¼’ã¤ã®ç•°ãªã‚‹è„†å¼±æ€§/æ”»æ’ƒ â€¢ç¾åœ¨ã€ï¼“ã¤ã®æ”»æ’ƒâ¼¿æ³•ãŒå…¬é–‹ã•ã‚Œã¦ã„ã‚‹ ã‚¿ã‚¤ãƒ—ï¼‘ï¼šé…åˆ—ã®å¢ƒç•Œãƒã‚§ãƒƒã‚¯ãƒã‚¤ãƒ‘ã‚¹ (CVE-2017-5753) (Spectre) ã‚¿ã‚¤ãƒ—ï¼’ï¼šåˆ†å²ã‚¿ãƒ¼ã‚²ãƒƒãƒˆã‚¤ãƒ³ã‚¸ã‚§ã‚¯ã‚·ãƒ§ãƒ³ (CVE-2017-5715) (Spectre) ã‚¿ã‚¤ãƒ—ï¼“ï¼šä¸æ£ãªãƒ‡ãƒ¼ã‚¿ã‚ãƒ£ãƒƒã‚·ãƒ¥èªã¿è¾¼ã¿ (CVE-2017-5754) (Meltdown) 4. ç™ºè¦‹è€… â€¢2017å¹´6æœˆã”ã‚ã«ãŸã¾ãŸã¾åŒã˜ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã§ è¤‡æ•°ã®ãƒãƒ¼ãƒ ã«ç™ºè¦‹ã•ã‚ŒãŸ â€¢Meltdown ãƒ» Jann HornÂ (Google Project Zero) ãƒ» Werner Haas,Â Thomas PrescherÂ (Cyberus
ionis 2018/01/11
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Spectre
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Meltdown and Spectre
Meltdown and Spectre Vulnerabilities in modern computers leak passwords and sensitive data. Meltdown and Spectre exploit critical vulnerabilities in modern processors. These hardware vulnerabilities allow programs to steal data which is currently processed on the computer. While programs are typically not permitted to read data from other programs, a malicious program can exploit Meltdown and Spec
ionis 2018/01/09
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Spectre

Meltdown
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Reading privileged memory with a side-channel
We have discovered that CPU data cache timing can be abused to efficiently leak information out of mis-speculated execution, leading to (at worst) arbitrary virtual memory read vulnerabilities across local security boundaries in various contexts. Variants of this issue are known to affect many modern processors, including certain processors by Intel, AMD and ARM. For a few Intel and AMD CPU models
ionis 2018/01/09
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Spectre
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CPUã®è„†å¼±æ€§ Meltdownã¨Spectreã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸ - piyolog
2018å¹´1æœˆ3æ—¥ã«CPUã«é–¢é€£ã™ã‚‹3ã¤ã®è„†å¼±æ€§æƒ…å ±ãŒå…¬é–‹ã•ã‚Œã¾ã—ãŸã€‚å ±å‘Šè€…ã«ã‚ˆã‚‹ã¨ã“ã‚Œã‚‰ã®è„†å¼±æ€§ã¯Meltdownã€Spectreã¨å‘¼ç§°ã•ã‚Œã¦ã„ã¾ã™ã€‚ã“ã“ã§ã¯é–¢é€£æƒ…å ±ã‚’ã¾ã¨ã‚ã¾ã™ã€‚ è„†å¼±æ€§ã®æ¦‚è¦ å ±å‘Šè€…ãŒè„†å¼±æ€§æƒ…å ±ã‚’æ¬¡ã®å°‚ç”¨ã‚µã‚¤ãƒˆã§å…¬é–‹ã—ãŸã€‚ Meltdown and Spectre (ã¾ãŸã¯ã“ã¡ã‚‰) 3ã¤ã®è„†å¼±æ€§ã®æ¦‚è¦ã‚’ã¾ã¨ã‚ã‚‹ã¨æ¬¡ã®é€šã‚Šã€‚ è„†å¼±æ€§ã®åç§° Meltdown Spectre CVE CVE-2017-5754ï¼ˆRogue data cache loadï¼‰ CVE-2017-5753ï¼ˆBounds check bypassï¼‰ CVE-2017-5715ï¼ˆBranch target injectionï¼‰ å½±éŸ¿ã‚’å—ã‘ã‚‹CPU Intel Intelã€AMDã€ARM CVSSv3 åŸºæœ¬å€¤ 4.7(JPCERT/CC) 5.6(NIST) â†ã«åŒã˜ PoC å ±å‘Šè€…éžå…¬é–‹ è«–æ–‡ä¸ã«x
ionis 2018/01/09
Meltdown

Spectre

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