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Linux Distros Unpatched Vulnerability : CVE-2020-25613

high Nessus Plugin ID 229939

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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.

 - An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack. (CVE-2020-25613)

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-2020-25613

Plugin Details

Severity: High

ID: 229939

File Name: unpatched_CVE_2020_25613.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 3/5/2025

Updated: 8/20/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-25613

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:ruby-irb, p-cpe:/a:redhat:enterprise_linux:rubygem-rake, p-cpe:/a:redhat:enterprise_linux:rubygem-rdoc, p-cpe:/a:centos:centos:rubygem-rdoc, p-cpe:/a:redhat:enterprise_linux:ruby-devel, p-cpe:/a:centos:centos:ruby-devel, p-cpe:/a:redhat:enterprise_linux:ruby-tcltk, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:rubygem-json, 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:rubygem-json, p-cpe:/a:redhat:enterprise_linux:ruby-doc, p-cpe:/a:centos:centos:rubygem-psych, p-cpe:/a:redhat:enterprise_linux:rubygem-minitest, p-cpe:/a:centos:centos:rubygem-io-console, p-cpe:/a:centos:centos:rubygems, p-cpe:/a:redhat:enterprise_linux:rubygem-psych, p-cpe:/a:redhat:enterprise_linux:rubygem-bigdecimal, cpe:/o:redhat:enterprise_linux:7, 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:centos:centos:rubygems-devel, p-cpe:/a:redhat:enterprise_linux:ruby-libs, p-cpe:/a:redhat:enterprise_linux:ruby-irb, p-cpe:/a:centos:centos:ruby-libs, p-cpe:/a:centos:centos:ruby-tcltk

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/6/2020

Reference Information

CVE: CVE-2020-25613