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Vulnerability Details : CVE-2017-17790

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.
Publish Date : 2017-12-20 Last Update Date : 2018-08-02
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- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 74

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2018:0378: ruby security update (Important) oval:com.redhat.rhsa:def:20180378 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2017-17790

# Product Type Vendor Product Version Update Edition Language
1 Application Ruby-lang Ruby 2.2.0 Version Details Vulnerabilities
2 Application Ruby-lang Ruby 2.5.0 Preview1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Ruby-lang Ruby 2

- References For CVE-2017-17790

https://access.redhat.com/errata/RHSA-2018:0584
REDHAT RHSA-2018:0584
https://access.redhat.com/errata/RHSA-2018:0585
REDHAT RHSA-2018:0585
https://github.com/ruby/ruby/pull/1777 CONFIRM
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
MLIST [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update
https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html
MLIST [debian-lts-announce] 20171225 [SECURITY] [DLA 1221-1] ruby1.9.1 security update
https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html
MLIST [debian-lts-announce] 20171225 [SECURITY] [DLA 1222-1] ruby1.8 security update
https://www.debian.org/security/2018/dsa-4259
DEBIAN DSA-4259
https://access.redhat.com/errata/RHSA-2018:0583
REDHAT RHSA-2018:0583
https://access.redhat.com/errata/RHSA-2018:0378
REDHAT RHSA-2018:0378

- Metasploit Modules Related To CVE-2017-17790

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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