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Ãë¾àÁ¡ID 22549
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ÇÁ·ÎÅäÄÝ TCP
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»ó¼¼¼³¸í ¹è³ÊÁ¤º¸¿¡ µû¸£¸é ¿ø°ÝÀÇ À¥ ¼­¹ö¿¡´Â 0.9.8w ÀÌÀüÀÇ OpenSSL ¹öÀüÀÌ ½ÇÇàµÇ°í ÀÖ´Ù. ÇØ´ç ¹öÀüÀº memory corruption Ãë¾àÁ¡ÀÌ Á¸ÀçÇÑ´Ù.

ÇØ´ç ¹öÀüÀº 'asn1_d2i_read_bio' ÇÔ¼ö¿¡¼­ ASN.1 DER Æ÷¸Ë µ¥ÀÌÅ͸¦ ÀÐÀ» ¶§ integer truncation ¿¡·¯°¡ Á¸ÀçÇØ memory corruptionÃë¾àÁ¡ÀÌ Á¸ÀçÇÑ´Ù.
'BIO' , 'FILE'ÀÇ ±âº»ÇÔ¼ö¸¦ »ç¿ëÇÏ´Â ¾îÇø®ÄÉÀ̼ǰú 'SMIME_read_PKCS7', 'SMIME_read_CMS' Æļ­¸¦ »ç¿ëÇÏ´Â 'S/MIME', 'CMS'¾îÇø®ÄÉÀ̼ÇÀÌ ¿µÇâÀ» ¹Þ´Â´Ù.

OpenSSLÀÇ SSL/TLS, memory-based ASN.1('d2i_X509', 'd2i_PKCS12',...) ÇÔ¼ö¿Í PEMÇÔ¼ö¸¸ »ç¿ëÇÏ´Â ¾îÇø®ÄÉÀ̼ÇÀº ¿µÇâÀ» ¹ÞÁö ¾Ê´Â´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://openssl.org/news/secadv_20120419.txt
http://seclists.org/fulldisclosure/2012/Apr/210
http://openssl.org/news/secadv_20120424.txt
http://cvs.openssl.org/chngview?cn=22479
http://www.openssl.org/news/changelog.html

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
0.9.8w ÀÌÀüÀÇ OpenSSL 0.9.8
ÇØ°áÃ¥ OpenSSL À¥ »çÀÌÆ®ÀÎ http://www.openssl.org/ ¿¡¼­ ±¸ÇÒ ¼ö ÀÖ´Â OpenSSLÀÇ °¡Àå ÃֽŠ¹öÀü(0.9.8w ¶Ç´Â ÀÌÈÄ)À¸·Î ¾÷±×·¹À̵å ÇÏ¿©¾ß ÇÑ´Ù.
°ü·Ã URL CVE-2012-2110,CVE-2012-2131 (CVE)
°ü·Ã URL 53158,53212 (SecurityFocus)
°ü·Ã URL (ISS)