VDB-162300 · CVE-2020-25613 · Nessus 236604

Ruby up to 2.5.8/2.6.6/2.7.1 WEBrick request smuggling

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Ruby up to 2.5.8/2.6.6/2.7.1. The affected element is an unknown function of the component WEBrick. The manipulation results in request smuggling. This vulnerability is known as CVE-2020-25613. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Ruby up to 2.5.8/2.6.6/2.7.1 (Programming Language Software). Affected is an unknown code block of the component WEBrick. The manipulation with an unknown input leads to a request smuggling vulnerability. CWE is classifying the issue as CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 10/06/2020. The advisory is shared for download at hackerone.com. This vulnerability is traded as CVE-2020-25613. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236604 (Alibaba Cloud Linux 3 : 0044: ruby:2.7 (ALINUX3-SA-2021:0044)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (236604) and CERT Bund (WID-SEC-2023-1109). Once again VulDB remains the best source for vulnerability data.

Affected

Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
Gentoo Linux
Open Source Ruby

Productinfo

Type

Programming Language Software

Name

Ruby

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 236604
Nessus Name: Alibaba Cloud Linux 3 : 0044: ruby:2.7 (ALINUX3-SA-2021:0044)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/16/2020 🔍
10/06/2020 +20 days 🔍
10/06/2020 +0 days 🔍
05/09/2026 +2041 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-25613 (🔍)
GCVE (CVE): GCVE-0-2020-25613
GCVE (VulDB): GCVE-100-162300
CERT Bund: WID-SEC-2023-1109 - Ruby: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 10/06/2020 18:18
Updated: 05/09/2026 18:30
Changes: 10/06/2020 18:18 (11), 10/06/2020 18:21 (25), 11/15/2020 10:20 (4), 11/16/2020 18:38 (3), 11/16/2020 18:41 (14), 05/20/2025 18:17 (16), 05/09/2026 18:30 (7)
Complete: 🔍
Cache ID: 216::103