CVE-2017-17790
CRITICALEPSS 92th pctlDescription
The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.
How to fix
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
High risk: more likely to be exploited than 92% of all known CVEs.
References
Related Vulnerabilities
Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2013-2251 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2023-22527 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2019-2725 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2022-46169 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2022-35914 | Critical | 9.8 | 100% | KEV | - |
| CVE-2019-17558 | High | 7.5 | 99% | KEV | Fix |
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Markdown
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.