CVE-2015-1855
5.9 · MEDIUMOverview
CVE-2015-1855 is a medium-severity vulnerability affecting ruby-lang ruby. It was published on November 29, 2019 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from ruby-lang. Update ruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ruby-lang | ruby | >= 2.1.0, < 2.1.6 | Affected |
| ruby-lang | trunk | >= 0, < 50292 | Affected |
| puppet | puppet_enterprise | >= 3.0.0, < 3.8.0 | Affected |
References
Frequently Asked Questions
What is CVE-2015-1855?
CVE-2015-1855 is a medium-severity vulnerability affecting ruby-lang ruby. It was published on November 29, 2019 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
How severe is CVE-2015-1855?
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2015-1855?
Check the references section for vendor advisories and patches from ruby-lang. Update ruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2015-1855?
CyberStrike's AI-powered security agents can automatically detect CVE-2015-1855 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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