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CVE-2015-1855

CVE-2015-1855

EPSS 2.8%
verify_certificate_identity in the OpenSSL extension in Ruby before 2.0.0 patchlevel 645, 2.1.x before 2.1.6, and 2.2.x before 2.2.2 does not properly validate hostnames, which allows remote attackers to spoof servers via vectors related to (1) multiple wildcards, (1) wildcards in IDNA names, (3) case sensitivity, and (4) non-ASCII characters.
Affected products
Ruby · Ruby

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References
https://bugs.ruby-lang.org/issues/9644https://puppetlabs.com/security/cve/cve-2015-1855https://www.ruby-lang.org/en/news/2015/04/13/ruby-openssl-hostname-matching-vulnerability/http://www.debian.org/security/2015/dsa-3245http://www.debian.org/security/2015/dsa-3246http://www.debian.org/security/2015/dsa-3247