CVE-2024-5971
highpriority · track · 1EPSS 0.029 · 87 %ileDEEUNLRUUSEPSS · scored 2026-10-22
A vulnerability was found in Undertow, where the chunked response hangs after the body was flushed. The response headers and body were sent but the client would continue waiting as Undertow does not send the expected 0\r\n termination of the chunked response. This results in uncontrolled resource consumption, leaving the server side to a denial of service attack. This happens only with Java 17 TLSv1.3 scenarios.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (93)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2024-0414Kwetsbaarheden verholpen in Oracle CommunicationsNL2024-10-17csaf · ncsc_nlNL
Oracle heeft kwetsbaarheden verholpen in diverse Communications producten en systemen.
- WID-SEC-W-2024-3195Oracle Communications: Mehrere SchwachstellenDeutsch2024-10-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- GHSA-xpp6-8r3j-ww43Undertow Denial of Service vulnerability2024-07-08ghsa · osvUS
A vulnerability was found in Undertow, where the chunked response hangs after the body was flushed. The response headers and body were sent but the client would continue waiting as Undertow does not send the expected `0\r\n` termination of the chunked response. This results in uncontrolled resource consumption, leaving the server side to a denial of service attack. This happens only with Java 17 TLSv1.3 scenarios.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (27)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/CVE-2024-5971cnnvd
- https://access.redhat.com/security/cve/cve-2024-5971cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2292211cnnvd
- https://cxsecurity.com/cveshow/CVE-2024-5971/cnnvd
- https://vigilance.fr/vulnerability/Undertow-denial-of-service-via-TLSv1-3-NewSessionTicket-44679cnnvd
- https://www.oracle.com/security-alerts/cpuoct2024.htmlcnnvd
- https://access.redhat.com/errata/RHSA-2024:4392enisa_euvd
- https://access.redhat.com/errata/RHSA-2024:4884enisa_euvd
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