CVE-2017-17790 is a critical command injection vulnerability affecting Ruby through version 2.4.3, specifically within the lazy_initialize function of lib/resolv.rb. This flaw, distinct from CVE-2017-17405, allows unauthenticated attackers to execute arbitrary commands by providing a specially crafted argument to Resolv::Hosts::new that begins with a pipe character. With a CVSS score of 9.8 (CRITICAL), it poses a severe risk of complete compromise (confidentiality, integrity, availability) due to its network-based attack vector and low attack complexity. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.2, <= 2.2.8CPE matchmatch criteria | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | ||
>= 2.3, <= 2.3.5CPE matchmatch criteria | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | ||
>= 2.4, <= 2.4.2CPE matchmatch criteria | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | ||
2.5.0CPE matchmatch criteria | cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.