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Ãë¾àÁ¡ID 23143
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ÇÁ·ÎÅäÄÝ UDP
ºÐ·ù NTPD
»ó¼¼¼³¸í NTP µ¥¸óÀÇ ¹öÀü Á¤º¸¿¡ µû¸£¸é ÇØ´ç µ¥¸óÀº ¾ÈÀüÇÏÁö ¾ÊÀº ±ÇÇÑ Ãë¾àÁ¡¿¡ Ãë¾àÇÏ´Ù. NTP (Network Time Protocol) µ¥¸óÀº ¼³Ä¡µÈ ½Ã½ºÅÛµé »ó¿¡¼­ Ŭ·Ï(clock)À» µ¿±âÈ­Çϱâ À§ÇÏ¿© »ç¿ëµÇ´Â Á¤È®ÇÑ ½Ã°¢ Á¤º¸¸¦ Á¦°øÇØ ÁÖ´Â ¿ªÇÒÀ» ÇÑ´Ù. NTPD 4.2.0b ÀÌÀüÀÇ ¹öÀüµéÀº "-u" ¸í·ÉÇà ¿É¼ÇÀ» °¡Áö°í ±×·ì¸íÀ» ¸í±âÇÒ ¶§ÀÇ ¿À·ù·Î ÀÎÇÏ¿©, ·ÎÄÃÀÇ °ø°ÝÀÚ°¡ ÀǵµÇÏÁö ¾ÊÀº ´Ù¸¥ ±ÇÇÑÀ» °¡Áö°í NTPD°¡ ½ÇÇàµÇµµ·Ï ÇÒ ¼ö ÀÖ°Ô ÇØ ÁÙ ¼ö ÀÖ´Ù. ·ÎÄà °ø°ÝÀÚ´Â ÀÌ Ãë¾àÁ¡À» µµ¿ëÇÏ¿© ±×·ìÀÇ "gid"ÀÇ ±ÇÇÑÀÌ ¾Æ´Ñ ÀÚ½ÅÀÇ "gid"¸¦ °¡Áö°í NTPD¸¦ ½ÇÇà½Ãų ¼ö ÀÖ´Ù.

* ¾Ë¸²: ÀÌ Á¡°ËÇ׸ñÀº ÀÌ Ãë¾àÁ¡À» Á¡°ËÇϱâ À§ÇØ ÇØ´ç FTP µ¥¸óÀÇ ¹öÀü Á¤º¸¸¸À» È®ÀÎÇÑ´Ù. µû¶ó¼­ °ÅÁþ ¾ç¼º¹ÝÀÀ(False Positive)À» º¸ÀÏ ¼ö ÀÖ´Ù.

* Âü°í »çÀÌÆ®:
https://ntp.isc.org/bugs/show_bug.cgi?id=392
http://secunia.com/advisories/16602/
http://www.frsirt.com/english/advisories/2005/1561
http://www.debian.org/security/2005/dsa-801
http://www.mandriva.com/security/advisories?name=MDKSA-2005:156
http://www.redhat.com/archives/fedora-announce-list/2005-August/msg00119.html

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
NTPD 4.2.0b ÀÌÀüÀÇ ¹öÀüµé
¸ðµç ¿î¿µÃ¼Á¦ ¸ðµç ¹öÀü
ÇØ°áÃ¥ ´ÙÀ½ NTP ¼ÒÇÁÆ®¿þ¾î Downloads À¥ ÆäÀÌÁö¿¡¼­ ±¸ÇÒ ¼ö ÀÖ´Â NTPÀÇ °¡Àå ÃֽŠ¹öÀü(4.2.0b ȤÀº ÀÌÈÄ)À¸·Î ¾÷±×·¹À̵å ÇÏ¿©¾ß ÇÑ´Ù:
http://support.ntp.org/bin/view/Main/SoftwareDownloads
°ü·Ã URL CVE-2005-2496 (CVE)
°ü·Ã URL 14673 (SecurityFocus)
°ü·Ã URL 22035 (ISS)