CVE-2017-17790

Severity CVSS v4.0:

Pending analysis

Type:

CWE-74 Injection

Publication date:

20/12/2017

Last modified:

20/04/2025

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 &#39;|&#39; character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

7.50

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:ruby-lang:ruby::::::::	2.2 (including)	2.2.8 (including)
cpe:2.3:a:ruby-lang:ruby::::::::	2.3 (including)	2.3.5 (including)
cpe:2.3:a:ruby-lang:ruby::::::::	2.4 (including)	2.4.2 (including)
cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2017-17790

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools