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Excessive memory allocation

Moderate severity GitHub Reviewed Published Oct 17, 2018 to the GitHub Advisory Database • Updated Mar 28, 2023

Package

maven io.vertx:vertx-core (Maven)

Affected versions

>= 3.0.0, < 3.5.4

Patched versions

3.5.4

Description

In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the WebSocket HTTP upgrade implementation buffers the full http request before doing the handshake, holding the entire request body in memory. There should be a reasonnable limit (8192 bytes) above which the WebSocket gets an HTTP response with the 413 status code and the connection gets closed.

References

Published by the National Vulnerability Database Oct 10, 2018
Published to the GitHub Advisory Database Oct 17, 2018
Reviewed Jun 16, 2020
Last updated Mar 28, 2023

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
None
Integrity
None
Availability
High

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:N/I:N/A:H

EPSS score

0.314%
(71st percentile)

Weaknesses

CVE ID

CVE-2018-12541

GHSA ID

GHSA-45xm-v8gq-7jqx

Source code

Credits

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