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Ãë¾àÁ¡ID 22540
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ÇÁ·ÎÅäÄÝ TCP
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»ó¼¼¼³¸í ¹è³ÊÁ¤º¸¿¡ µû¸£¸é ¿ø°ÝÀÇ À¥ ¼­¹ö¿¡´Â 0.9.8h ÀÌÀüÀÇ OpenSSL ¹öÀüÀÌ ½ÇÇàµÇ°í ÀÖ´Ù. ÇØ´ç ¹öÀüÀº ´ÙÁß Ãë¾àÁ¡ÀÌ Á¸ÀçÇÑ´Ù.

- Ưº°È÷ Á¶ÀÛµÈ TLS 1.0 'Client Hello' ÆÐŶ°ú ¼­¹öÀ̸§À» ´Ù·ç´Â ¹æ¹ý¿¡ double-free ¿¡·¯°¡ Á¸ÀçÇÑ´Ù.

- TLS Çڵ彦ÀÌÅ© °úÁ¤°ú anonymous Diffie-Hellman Å° ±³È¯¿¡¼­ ³Î Æ÷ÀÎÅÍ ÂüÁ¶ ¿¡·¯°¡ Á¸ÀçÇÑ´Ù.
ÀÌ Ãë¾àÁ¡Àº Çڵ彦ÀÌÅ© °úÁ¤¿¡¼­ 'Server Key exchange message'À» »©¹ö¸²À¸·Î½á ¹ß»ýÇÏ¸ç ¾îÇø®ÄÉÀ̼ÇÀ» Å©·¡½¬ ½Ãų¼ö ÀÖ´Ù.

- 32ºñÆ® ¹öÀü¿¡¼­ NIST elliptic curves P-256 ³ª P-384À» °è»êÇÒ¶§ Á¤º¸À¯Ãâ Ãë¾àÁ¡ÀÌ Á¸ÀçÇÑ´Ù. ÀÌ Ãë¾àÁ¡À» ÀÌ¿ëÇÏ¿© °ø°ÝÀÚ´Â TLS¼­¹öÀÇ °³ÀÎÅ°¸¦ ¹ß°ßÇÒ ¼ö ÀÖ´Ù.

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

* Âü°í »çÀÌÆ®:
http://www.openwall.com/lists/oss-security/2011/12/01/6
http://www.openssl.org/news/secadv_20080528.txt

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
0.9.8h ÀÌÀüÀÇ OpenSSL 0.9.8
ÇØ°áÃ¥ OpenSSLÀÇ °¡Àå ÃֽŠ¹öÀü(0.9.8h ¶Ç´Â ÀÌÈÄ)À¸·Î ¾÷±×·¹À̵å ÇÏ¿©¾ß ÇÑ´Ù.
°ü·Ã URL CVE-2008-0891,CVE-2008-1672,CVE-2011-4354 (CVE)
°ü·Ã URL 29405,50882 (SecurityFocus)
°ü·Ã URL (ISS)