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OpenAdvisories
High · 7.5 CVE-2023-37544 EUVD-2023-3156GHSA-83q5-whqp-r8jr

Apache Pulsar WebSocket Proxy: Improper Authentication for WebSocket Proxy Endpoint Allows DoS

Published Dec 20, 2023 · Updated Feb 13, 2025 · Assigned by apache

Description

Improper Authentication vulnerability in Apache Pulsar WebSocket Proxy allows an attacker to connect to the /pingpong endpoint without authentication.

This issue affects Apache Pulsar WebSocket Proxy: from 2.8.0 through 2.8.*, from 2.9.0 through 2.9.*, from 2.10.0 through 2.10.4, from 2.11.0 through 2.11.1, 3.0.0.

The known risks include a denial of service due to the WebSocket Proxy accepting any connections, and excessive data transfer due to misuse of the WebSocket ping/pong feature.

2.10 Pulsar WebSocket Proxy users should upgrade to at least 2.10.5.
2.11 Pulsar WebSocket Proxy users should upgrade to at least 2.11.2.
3.0 Pulsar WebSocket Proxy users should upgrade to at least 3.0.1.
3.1 Pulsar WebSocket Proxy users are unaffected.
Any users running the Pulsar WebSocket Proxy for 2.8, 2.9, and earlier should upgrade to one of the above patched versions.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache Pulsar WebSocket Proxy 2.8.0 – ≤ 2.8.*, 2.9.0 – ≤ 2.9.*, 2.10.0 – ≤ 2.10.4, 2.11.0 – ≤ 2.11.1, 3.0.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven org.apache.pulsar:pulsar-websocket < 2.10.5 2.10.5 GHSA-83q5-whqp-r8jr
Maven org.apache.pulsar:pulsar-websocket >= 2.11.0, < 2.11.2 2.11.2 GHSA-83q5-whqp-r8jr
Maven org.apache.pulsar:pulsar-websocket >= 3.0.0, < 3.0.1 3.0.1 GHSA-83q5-whqp-r8jr

References