CVE-2021-3642

wildfly-elytron: possible timing attack in ScramServer

Severity Score

5.3

*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 Wildfly Elytron in versions prior to 1.10.14.Final, prior to 1.15.5.Final and prior to 1.16.1.Final where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnerability is confidentiality.

Se ha detectado un fallo en Wildfly Elytron en versiones anteriores a 1.10.14.Final, en versiones anteriores a la 1.15.5.Final y en versiones anteriores a la 1.16.1.Final donde ScramServer puede ser susceptible a Timing Attack si está habilitado. La mayor amenaza de esta vulnerabilidad es la confidencialidad.

A flaw was found in Wildfly Elytron where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnerability is confidentiality.

Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.1 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.4.0 and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.1 Release Notes for information about the most significant bug fixes and enhancements included in this release. Issues addressed include code execution, cross site scripting, denial of service, and traversal vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-12 CVE Reserved
2021-08-05 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-203: Observable Discrepancy

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1981407	2021-10-20
https://access.redhat.com/security/cve/CVE-2021-3642	2022-08-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Wildfly Elytron Search vendor "Redhat" for product "Wildfly Elytron"				< 1.10.14 Search vendor "Redhat" for product "Wildfly Elytron" and version " < 1.10.14"		-		Affected
Redhat Search vendor "Redhat"		Wildfly Elytron Search vendor "Redhat" for product "Wildfly Elytron"				>= 1.11.0 < 1.15.5 Search vendor "Redhat" for product "Wildfly Elytron" and version " >= 1.11.0 < 1.15.5"		-		Affected
Redhat Search vendor "Redhat"		Wildfly Elytron Search vendor "Redhat" for product "Wildfly Elytron"				>= 1.16.0 < 1.16.1 Search vendor "Redhat" for product "Wildfly Elytron" and version " >= 1.16.0 < 1.16.1"		-		Affected
Redhat Search vendor "Redhat"		Build Of Quarkus Search vendor "Redhat" for product "Build Of Quarkus"				-		-		Affected
Redhat Search vendor "Redhat"		Codeready Studio Search vendor "Redhat" for product "Codeready Studio"				12.0 Search vendor "Redhat" for product "Codeready Studio" and version "12.0"		-		Affected
Redhat Search vendor "Redhat"		Data Grid Search vendor "Redhat" for product "Data Grid"				8.0 Search vendor "Redhat" for product "Data Grid" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Descision Manager Search vendor "Redhat" for product "Descision Manager"				7.0 Search vendor "Redhat" for product "Descision Manager" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Integration Camel K Search vendor "Redhat" for product "Integration Camel K"				-		-		Affected
Redhat Search vendor "Redhat"		Integration Camel Quarkus Search vendor "Redhat" for product "Integration Camel Quarkus"				*		-		Affected
Redhat Search vendor "Redhat"		Jboss Enterprise Application Platform Search vendor "Redhat" for product "Jboss Enterprise Application Platform"				7.0.0 Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "7.0.0"		-		Affected
Redhat Search vendor "Redhat"		Jboss Enterprise Application Platform Expansion Pack Search vendor "Redhat" for product "Jboss Enterprise Application Platform Expansion Pack"				-		-		Affected
Redhat Search vendor "Redhat"		Jboss Fuse Search vendor "Redhat" for product "Jboss Fuse"				7.0.0 Search vendor "Redhat" for product "Jboss Fuse" and version "7.0.0"		-		Affected
Redhat Search vendor "Redhat"		Openshift Application Runtimes Search vendor "Redhat" for product "Openshift Application Runtimes"				-		-		Affected
Redhat Search vendor "Redhat"		Process Automation Search vendor "Redhat" for product "Process Automation"				7.0 Search vendor "Redhat" for product "Process Automation" and version "7.0"		-		Affected
Quarkus Search vendor "Quarkus"		Quarkus Search vendor "Quarkus" for product "Quarkus"				<= 2.1.4 Search vendor "Quarkus" for product "Quarkus" and version " <= 2.1.4"		-		Affected