CVE-2021-20220

undertow: Possible regression in fix for CVE-2020-10687

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

Se encontró un fallo en Undertow. Se encontró una regresión en la corrección para CVE-2020-10687. El trafico no autorizado de peticiones HTTP relacionado con CVE-2017-2666 es posible contra HTTP/1.x y HTTP/2 debido a que se permiten caracteres no válidos en una petición HTTP. Este fallo permite a un atacante envenenar un caché web, llevar a cabo un ataque XSS y obtener información confidencial de una petición distinta a la suya. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-02-23 CVE Published
2023-11-09 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (3)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20220210-0013	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1923133	2021-07-15
https://access.redhat.com/security/cve/CVE-2021-20220	2021-07-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Undertow Search vendor "Redhat" for product "Undertow"				< 2.0.34 Search vendor "Redhat" for product "Undertow" and version " < 2.0.34"		-		Affected
Redhat Search vendor "Redhat"		Undertow Search vendor "Redhat" for product "Undertow"				>= 2.1.0 < 2.1.6 Search vendor "Redhat" for product "Undertow" and version " >= 2.1.0 < 2.1.6"		-		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		linux		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		windows		Affected
Netapp Search vendor "Netapp"		Oncommand Workflow Automation Search vendor "Netapp" for product "Oncommand Workflow Automation"				-		-		Affected