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Case File

CVE-2017-17790

CRITICAL · CVSS 9.8 EPSS 5.91% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2017-12-20 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-17790
Severity
CRITICAL
CVSS
9.8
EPSS
5.91%

Original NVD Description

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.