// For flags

CVE-2021-3859

undertow: client side invocation timeout raised when calling over HTTP2

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.

Se ha encontrado un fallo en Undertow que dispara el tiempo de espera de la invocación del lado del cliente con determinadas llamadas realizadas a través de HTTP2. Este fallo permite a un atacante realizar ataques de denegación de servicio.

Red Hat Single Sign-On is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat Single Sign-On for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. This erratum releases a new image for Red Hat Single Sign-On 7.4.10 for use within the OpenShift Container Platform 3.10, OpenShift Container Platform 3.11, and within the OpenShift Container Platform 4.3 cloud computing Platform-as-a-Service for on-premise or private cloud deployments, aligning with the standalone product release.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-05 CVE Reserved
  • 2022-02-03 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-214: Invocation of Process Using Visible Sensitive Information
  • CWE-668: Exposure of Resource to Wrong Sphere
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
Jboss Enterprise Application Platform
Search vendor "Redhat" for product "Jboss Enterprise Application Platform"
7.3
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "7.3"
-
Affected
Redhat
Search vendor "Redhat"
Jboss Enterprise Application Platform
Search vendor "Redhat" for product "Jboss Enterprise Application Platform"
7.4
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "7.4"
-
Affected
Redhat
Search vendor "Redhat"
Single Sign-on
Search vendor "Redhat" for product "Single Sign-on"
7.4.10
Search vendor "Redhat" for product "Single Sign-on" and version "7.4.10"
-
Affected
Redhat
Search vendor "Redhat"
Single Sign-on
Search vendor "Redhat" for product "Single Sign-on"
7.5.1
Search vendor "Redhat" for product "Single Sign-on" and version "7.5.1"
-
Affected
Redhat
Search vendor "Redhat"
Undertow
Search vendor "Redhat" for product "Undertow"
< 2.2.15
Search vendor "Redhat" for product "Undertow" and version " < 2.2.15"
-
Affected
Netapp
Search vendor "Netapp"
Cloud Secure Agent
Search vendor "Netapp" for product "Cloud Secure Agent"
--
Affected
Netapp
Search vendor "Netapp"
Oncommand Insight
Search vendor "Netapp" for product "Oncommand Insight"
--
Affected
Netapp
Search vendor "Netapp"
Oncommand Workflow Automation
Search vendor "Netapp" for product "Oncommand Workflow Automation"
--
Affected