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cron ã®æ„å¤–ãªè½ã¨ã—ç©´ï¼ - ã‚‚ã‚ãš blog
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kana321 2015/03/18
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bash ã®è„†å¼±æ€§ "Shell Shock" ã®ã‚ã£ã¡ã‚ƒç´°ã‹ã„è©± (CVE-2014-6271) - ã‚‚ã‚ãš blog
â€»(2014/10/1 è¿½è¨˜) è„†å¼±æ€§ã®ç•ªå·ã‚’èª¤ã£ã¦ CVE-2014-6721 ã¨è¡¨è¨˜ã—ã¦ã—ã¾ã£ã¦ã„ã¾ã—ãŸ æ£ã—ãã¯ "CVE-2014-6271" ã§ã™ å¤±ç¤¼è‡´ã—ã¾ã—ãŸ â€»(2014/10/7 è¿½è¨˜) 2014/10/7 14:00æ™‚ç‚¹ã§ Shell Shock ã¸ã®ä¿®æ£ãƒ‘ãƒƒãƒã¯6å€‹ å…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ æ—¢ã«å¯¾å¿œæ¸ˆã¿ã®ã‚·ã‚¹ãƒ†ãƒ ã§ã‚‚ãƒ‘ãƒƒãƒã®æ¼ã‚ŒãŒãªã„ã‹æ³¨æ„ã—ã¦ãã ã•ã„ ã‚·ã‚§ãƒ«ã«è„†å¼±æ€§ãŒè¦‹ã¤ã‹ã£ãŸã‚‰ã—ã„ã§ã™ ã“ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’å®Ÿè¡Œã™ã‚‹ã¨è„†å¼±æ€§ãŒã‚ã‚‹ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‹ã®ãƒã‚§ãƒƒã‚¯ãŒã§ãã‚‹ã‚ˆã†ã§ã™ $ env x='() { :;}; echo vulnerable' bash -c "echo this is a test" ä»¥ä¸‹ã®ã‚ˆã†ã«è¡¨ç¤ºã•ã‚ŒãŸã‚‰ã‚¢ã‚¦ãƒˆã§ã™ vulnerable this is a test ã©ã†ã‚„ã‚‰ã€ã“ã®ã‚³ãƒžãƒ³ãƒ‰ãŒæ£å¸¸ã«å®Ÿè¡Œã§ãã‚‹ã¨ã„ã†ã®ãŒã“ã®è„†å¼±æ€§ã®æ£ä½“ã‚‰ã—ãã€ echo vuln
kana321 2014/09/30
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kana321 2014/05/26
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kana321 2013/08/02
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2012 å¹´ 7 æœˆ 1 æ—¥ã®ã†ã‚‹ã†ç§’æŒ¿å…¥æ™‚ã«ç™ºç”Ÿã—ãŸ Linux ã‚«ãƒ¼ãƒãƒ«ã®ä¸å…·åˆã«é–¢ã™ã‚‹æƒ…å ±
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kana321 2012/08/29
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2. ã‚‚ãã˜ â–º ãŠã•ã‚‰ã„ â–º ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ(ssh/scp)ã®è©± ãƒãƒ¼ãƒˆè»¢é€ã®è©± å¤šæ®µssh ãã®ä»–ã®è»¢é€ã®è©±ãƒ»ä»–ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ â–º ã‚µãƒ¼ãƒ(sshd)ã®è©± â–º ã¡ã‚‡ã£ã¨ã—ãŸç–‘å• â–º ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã®è©± â–º ã¾ã¨ã‚ 2 / 62 5. RFC RFC 4250 The Secure Shell (SSH) Protocol Assigned Numbers RFC 4251 The Secure Shell (SSH) Protocol Architecture RFC 4252 The Secure Shell (SSH) Authentication Protocol RFC 4253 The Secure Shell (SSH) Transport Layer Protocol RFC 4254 The Secure Shell (SSH) Connection Protocol RF
kana321 2012/05/30
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