Bug 2392306 (CVE-2025-9784)
| Summary: | CVE-2025-9784 undertow: Undertow MadeYouReset HTTP/2 DDoS Vulnerability | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | abrianik, aschwart, asoldano, bbaranow, bmaxwell, boliveir, brian.stansberry, darran.lofthouse, dhanak, dkreling, dosoudil, drosa, fjuma, fmariani, ggrzybek, gmalinko, ibek, istudens, ivassile, iweiss, janstey, jpoth, jrokos, kverlaen, mnovotny, mosmerov, mposolda, msochure, msvehla, nwallace, parichar, pdelbell, pesilva, pjindal, pmackay, rstancel, rstepani, sausingh, smaestri, ssilvert, sthorger, tasato, tcunning, tom.jenkinson, vmuzikar, yfang |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
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).
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2392309, 2392308 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2025-09-01 06:34:39 UTC
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