---
cve: "CVE-2015-1855"
severity: "LOW"
cvss: 3.1
epss: "2.8%"
vendor: "Ruby"
kev: false
exploited: false
published: "2019-11-29 21:15:10"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T03:19:51+02:00"
---

# CVE-2015-1855

> 3.1 LOW

## Beschreibung

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.

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2015-1855) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_