openssl Alternative chains certificate forgery (CVE-2015-1793)
출처 : http://openssl.org/news/secadv_20150709.txt 엇.. 언제 이런 이슈가 나왔지??? 하고 뒤늦게 알게 된후.. centos6 centos7 모두 업데이트 기록을 조사해 봤으나 관련 이슈로 업데이트 된 기록이 없음.. 자세히 살펴보니 1.0.2c, 1.0.2b, 1.0.1n, 1.0.1o 이렇게 4가지 버전만 해당된다고… 다행인지 centos는 해당 버전을 사용하지 않기 때문에 비껴감.. ㅋㅋㅋ 원문 OpenSSL Security Advisory [9 Jul 2015] ======================================= Alternative chains certificate forgery (CVE-2015-1793) ====================================================== Severity: High During certificate verification, OpenSSL (starting from version 1.0.1n and 1.0.2b) will attempt to find an alternative certificate chain if the first attempt to build such a chain fails. An error in the implementation of this logic can mean that an attacker could cause certain checks on untrusted certificates to be bypassed, such as the CA flag, enabling them to use a valid leaf certificate to act as a CA and “issue” an invalid certificate. This issue will impact any [ more… ]