CVE-2017-17790
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Ruby
PublishedDec 20, 2017
First seenDec 20, 2017
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ruby-lang ruby | 2.2 ≤ v ≤ 2.2.8, 2.3 ≤ v ≤ 2.3.5, 2.4 ≤ v ≤ 2.4.2, 2.5.0 | — |
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