Detections
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Linux Distros Unpatched Vulnerability : CVE-2019-16255

high Nessus Plugin ID 222474

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the command argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method. (CVE-2019-16255)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2019-16255

https://ubuntu.com/security/CVE-2019-16255

Plugin Details

Severity: High

ID: 222474

File Name: unpatched_CVE_2019_16255.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/10/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2019-16255

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:rubygem-rake, p-cpe:/a:centos:centos:ruby-irb, p-cpe:/a:redhat:enterprise_linux:rubygem-rdoc, p-cpe:/a:centos:centos:rubygem-rdoc, p-cpe:/a:redhat:enterprise_linux:ruby-devel, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:centos:centos:rubygem-rake, p-cpe:/a:centos:centos:rubygem-minitest, p-cpe:/a:redhat:enterprise_linux:rubygems-devel, p-cpe:/a:redhat:enterprise_linux:ruby, p-cpe:/a:centos:centos:ruby-devel, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:ruby-tcltk, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:rubygem-json, p-cpe:/a:canonical:ubuntu_linux:jruby, p-cpe:/a:centos:centos:rubygems, p-cpe:/a:redhat:enterprise_linux:rubygem-psych, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:redhat:enterprise_linux:rubygem-bigdecimal, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:rubygem-psych, p-cpe:/a:centos:centos:rubygem-json, p-cpe:/a:redhat:enterprise_linux:ruby-doc, p-cpe:/a:centos:centos:rubygem-bigdecimal, p-cpe:/a:redhat:enterprise_linux:rubygems, p-cpe:/a:centos:centos:ruby, p-cpe:/a:redhat:enterprise_linux:rubygem-io-console, p-cpe:/a:centos:centos:ruby-doc, p-cpe:/a:redhat:enterprise_linux:rubygem-minitest, p-cpe:/a:centos:centos:rubygem-io-console, p-cpe:/a:redhat:enterprise_linux:ruby-libs, p-cpe:/a:centos:centos:rubygems-devel, p-cpe:/a:redhat:enterprise_linux:ruby-irb, p-cpe:/a:centos:centos:ruby-libs, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:ruby-tcltk

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/26/2019

Reference Information

CVE: CVE-2019-16255