CVE-2025-9784
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
0 < 2.2.38.Final | affected | ||
| Red Hat | Red Hat JBoss Enterprise Application Platform | 2.2.39.Final-redhat-00001 < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 | 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7 < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 | 0:2.0.41-8.SP9_redhat_00001.1.el7eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 | 0:2.2.39-1.Final_redhat_00001.1.el7eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 | 0:7.4.24-4.GA_redhat_00002.1.el7eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 | 0:2.2.39-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 | 0:7.4.24-4.GA_redhat_00002.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 | 0:2.2.39-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 | 0:7.4.24-4.GA_redhat_00002.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:1.83.0-1.redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:33.0.0-2.jre_redhat_00003.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:4.0.6-1.redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:1.0.0-3.redhat_00009.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:2.0.2-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | 0:2.3.23-1.SP3_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:1.83.0-1.redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:33.0.0-2.jre_redhat_00003.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:4.0.6-1.redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:1.0.0-3.redhat_00009.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:2.0.2-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | 0:2.3.23-1.SP3_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:4.0.10-1.redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:1.82.0-1.redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:801.3.0-1.GA_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:1.0.1-3.redhat_00003.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:6.6.36-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:4.0.2-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:2.5.0-1.redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:2.3.20-2.SP4_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:8.1.3-4.GA_redhat_00006.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:5.0.12-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:2.6.6-1.Final_redhat_00001.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:8.1.1-4.GA_redhat_00007.1.el8eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:4.0.10-1.redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:1.82.0-1.redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:801.3.0-1.GA_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:1.0.1-3.redhat_00003.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:6.6.36-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:4.0.2-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:2.5.0-1.redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:2.3.20-2.SP4_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:8.1.3-4.GA_redhat_00006.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:5.0.12-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:2.6.6-1.Final_redhat_00001.1.el9eap < * | unaffected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:8.1.1-4.GA_redhat_00007.1.el9eap < * | unaffected |
Weaknesses
- CWE-770: Allocation of Resources Without Limits or Throttling
Workarounds
No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
CVE Program Container
Additional References
References
- https://access.redhat.com/errata/RHSA-2025:23143
- https://access.redhat.com/errata/RHSA-2026:0383
- https://access.redhat.com/errata/RHSA-2026:0384
- https://access.redhat.com/errata/RHSA-2026:0386
- https://access.redhat.com/errata/RHSA-2026:33371
- https://access.redhat.com/errata/RHSA-2026:33372
- https://access.redhat.com/errata/RHSA-2026:3889
- https://access.redhat.com/errata/RHSA-2026:3891
- https://access.redhat.com/errata/RHSA-2026:3892
- https://access.redhat.com/errata/RHSA-2026:4915
- https://access.redhat.com/errata/RHSA-2026:4916
- https://access.redhat.com/errata/RHSA-2026:4917
- https://access.redhat.com/errata/RHSA-2026:4924
- https://access.redhat.com/security/cve/CVE-2025-9784
- https://bugzilla.redhat.com/show_bug.cgi?id=2392306
- https://github.com/undertow-io/undertow/pull/1778
- https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final
- https://issues.redhat.com/browse/UNDERTOW-2598
- https://kb.cert.org/vuls/id/767506
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