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ÀÎÅÚ Å¸À̰Š·¹ÀÌÅ© HW º¸¾È±â´É CET ¹ßÇ¥

2020-06-16 10:39
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ÀÎÅÚÀÌ ¾ÆÀ̽º ·¹ÀÌÅ©ÀÇ µÚ¸¦ ÀÌÀº Â÷¼¼´ë ¸ð¹ÙÀÏ Ç÷§ÆûÀΠŸÀ̰Š·¹ÀÌÅ© CPU¿¡ žÀçµÉ »õ·Î¿î º¸¾È ±â´ÉÀ» °ø°³Çß´Ù.

CET(Control-Flow Enforcement Technology)·Î ¸í¸íµÈ º¸¾È ±â´ÉÀº CPU Â÷¿øÀÇ º¸¾È ±â´ÉÀ¸·Î, ¾Ç¼ºÄÚµåµéÀÌ ÈçÈ÷ ¾²´Â È帧 Á¦¾î Å»Ãë °ø°Ý ¹æ¾î Á¦°øÀ» À§ÇØ °£Á¢ ºÐ±â ÃßÀû°ú ½¦µµ¿ì ½ºÅÃÀ» Áö¿øÇÑ´Ù.

°£Á¢ ºÐ±â ÃßÀûÀº Á¡ÇÁ/ È£Ãâ ±â¹Ý ÇÁ·Î±×·¡¹Ö(Jump/Call-Oriented Programming, JOP/ COP) °ø°Ý ¹æ¾î¸¦ À§ÇÑ °£Á¢ ºÐ±â º¸È£ ±â´ÉÀ» Á¦°øÇϰí, ½¦µµ¿ì ½ºÅÃÀº ¸®ÅÏ ÁÖ¼Ò º¸È£ ±â´ÉÀ» Á¦°øÇÏ¿© ROP(Return-Oriented Programming) °ø°Ý º¸È£ ±â´ÉÀ» Á¦°øÇÑ´Ù.

MS´Â ÇâÈÄ À©µµ¿ì 10¿¡ Çϵå¿þ¾î ±â¹Ý ½ºÅà º¸È£(Hardware-enforced Stack Protection)¸¦ ÅëÇØ ÀÎÅÚ CET¸¦ Áö¿øÇÒ ¿¹Á¤À¸·Î À©µµ¿ì 10 ÀλçÀÌ´õ ÇÁ¸®ºä¸¦ ÅëÇØ Áö¿øÀÌ ½ÃÀ۵ǾúÀ¸¸ç, ÀÎÅÚ CET¸¦ Áö¿øÇÏ´Â Çϵå¿þ¾î¿¡¼­ ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù.

 

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