> CVE-2025-9784 [HIGH]

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PUBLISHED
2025-09-02 14:15
MODIFIED
2025-09-24 14:15
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
2.33%
Top 16.4%
DATA SOURCES:
NVD 🔗 2025-10-18 RED HAT 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-10-28 OSV 🔗 2026-11-08

> DESCRIPTION

A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).

> AFFECTED_PRODUCTS

Red Hat - Enterprise Linux
Version: 8.0
Red Hat - Enterprise Linux
Version: 9.0
Red Hat - Jboss Enterprise Application Platform
Version: 7.0.0
Red Hat - Jboss Enterprise Application Platform
Version: 8.0.0
Red Hat - Single Sign On
Version: 7.0
Red Hat - Fuse
Version: 7.0.0
Red Hat - Process Automation
Version: 7.0

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat Build of Apache Camel 4.14.2 for Spring Boot release.
Red Hat build of Apache Camel 4.14.2 for Spring Boot patch release and security update is now available. Red Hat Product Security has rated this update as having a security impact of Important. A Com...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.0 for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.0 for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.0. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.18 security update
An update is now available for Red Hat JBoss Enterprise Application Platform 7.3 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.15 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.1 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 for OpenShift image security update
A new image is available for Red Hat Single Sign-On 7.6.13, running on OpenShift Container Platform 3.10 and 3.11, and 4.3.
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update
A security update is now available for Red Hat Single Sign-On 7.6 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabi...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 7
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 9
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 8
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> GITHUB SECURITY ADVISORY

GHSA-95h4-w6j8-2rp8 HIGH

Undertow MadeYouReset HTTP/2 DDoS Vulnerability

AFFECTED PACKAGES:
MAVEN / io.undertow:undertow-core
>= 2.3.0.Alpha1, < 2.3.20.Final
Fixed in: 2.3.20.Final
MAVEN / io.undertow:undertow-core
< 2.2.38.Final
Fixed in: 2.2.38.Final

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Undertow: undertow madeyoureset http/2 ddos vulnerability

AFFECTED PACKAGES:
Unknown / Unknown
179 versions affected
ALIASES:
GHSA-95h4-w6j8-2rp8

> HISTORIQUE DES MODIFICATIONS

Première apparition
02/09/2025 14:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 15:07
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 18/10/2025 12:08
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 18/10/2025 12:08
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 1 year ago
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