CVE-2015-1855
MEDIUM 5.9EPSS 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
- Ruby
- CVSS v3.1 NVD
- 5.9 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS v2.0 NVD
- 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N - EPSS
- 2.81% chance of exploitation in the next 30 days, 86th percentile
- Published
- 2019-11-29
- Updated
- 2024-08-06
Proof-of-concept exploits (1)
- vpereira/CVE-2015-18550★ · 2017-03-14
Security advisories
- https://www.ruby-lang.org/en/news/2015/04/13/ruby-openssl-hostname-matching-vulnerability
- http://www.debian.org/security/2015/dsa-3245
- http://www.debian.org/security/2015/dsa-3246
- http://www.debian.org/security/2015/dsa-3247
- https://bugs.ruby-lang.org/issues/9644
- https://puppetlabs.com/security/cve/cve-2015-1855