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CVE-2024-5971

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Date: July 8, 2024

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.

Language: Java

Severity Score

Severity Score

Weakness Type (CWE)

Uncontrolled Recursion

CWE-674

Top Fix

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Upgrade Version

Upgrade to version io.undertow:undertow-core:2.2.34.Final

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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