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CVE-2017-17790

Date: December 20, 2017

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.

Language: Ruby

Severity Score

Related Resources (14)

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://github.com/ruby/ruby/pull/1777
https://www.debian.org/security/2018/dsa-4259
https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html
https://access.redhat.com/errata/RHSA-2018:0585
https://security-tracker.debian.org/tracker/CVE-2017-17790
https://access.redhat.com/errata/RHSA-2018:0584
https://access.redhat.com/errata/RHSA-2018:0378
https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html
https://nvd.nist.gov/vuln/detail/CVE-2017-17790
https://access.redhat.com/security/cve/CVE-2017-17790
https://access.redhat.com/errata/RHSA-2018:0583
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-17790
https://www.mend.io/vulnerability-database/CVE-2017-17790

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:
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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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