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Eclipse Vert.x vulnerable to a memory leak in TCP servers

Moderate severity GitHub Reviewed Published Apr 2, 2024 to the GitHub Advisory Database • Updated Jul 25, 2024

Package

maven io.vertx:vertx-core (Maven)

Affected versions

>= 4.3.4, < 4.4.8
>= 4.5.0, < 4.5.3

Patched versions

4.4.8
4.5.3

Description

A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error.

References

Published by the National Vulnerability Database Apr 2, 2024
Published to the GitHub Advisory Database Apr 2, 2024
Reviewed Apr 2, 2024
Last updated Jul 25, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

EPSS score

0.044%
(14th percentile)

Weaknesses

CVE ID

CVE-2024-1300

GHSA ID

GHSA-9ph3-v2vh-3qx7

Source code

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