CVE-2020-25613

ruby: Potential HTTP request smuggling in WEBrick

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se detectó un problema en Ruby versiones hasta 2.5.8, versiones 2.6.x hasta 2.6.6 y versiones 2.7.x hasta 2.7.1. WEBrick, un simple servidor HTTP integrado con Ruby, no había comprobado rigurosamente el valor del encabezado transfer-encoding. Un atacante puede explotar potencialmente este problema para omitir un proxy inverso (que también presenta una comprobación de encabezado deficiente), que puede conllevar a un ataque de Trafico Inapropiado de Peticiones HTTP

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-09-16 CVE Reserved
2020-10-06 CVE Published
2022-03-30 First Exploit
2024-08-04 CVE Updated
2024-09-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CAPEC

References (10)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html	Mailing List
https://security.netapp.com/advisory/ntap-20210115-0008	Third Party Advisory

URL	Date	SRC
https://github.com/metapox/CVE-2020-25613	2022-03-30

URL	Date	SRC
https://github.com/ruby/webrick/commit/8946bb38b4d87549f0d99ed73c62c41933f97cc7	2024-01-24

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PFP3E7KXXT3H3KA6CBZPUOGA5VPFARRJ	2024-01-24
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTZURYROG3FFED3TYCQOBV66BS4K6WOV	2024-01-24
https://security.gentoo.org/glsa/202401-27	2024-01-24
https://www.ruby-lang.org/en/news/2020/09/29/http-request-smuggling-cve-2020-25613	2024-01-24
https://access.redhat.com/security/cve/CVE-2020-25613	2022-02-21
https://bugzilla.redhat.com/show_bug.cgi?id=1883623	2022-02-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				<= 2.5.8 Search vendor "Ruby-lang" for product "Ruby" and version " <= 2.5.8"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				>= 2.6.0 <= 2.6.6 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.6.0 <= 2.6.6"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				>= 2.7.0 <= 2.7.1 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.7.0 <= 2.7.1"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Webrick Search vendor "Ruby-lang" for product "Webrick"				<= 1.6.0 Search vendor "Ruby-lang" for product "Webrick" and version " <= 1.6.0"		ruby		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected