CVE-2023-37544: Apache Pulsar WebSocket Proxy: Improper Authentication for WebSocket Proxy Endpoint Allows DoS
First published: Wed Dec 20 2023(Updated: )
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.
Credit: security@apache.org security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.apache.pulsar:pulsar-websocket | >=3.0.0<3.0.1 | 3.0.1 |
| maven/org.apache.pulsar:pulsar-websocket | >=2.11.0<2.11.2 | 2.11.2 |
| maven/org.apache.pulsar:pulsar-websocket | <2.10.5 | 2.10.5 |
| Apache Pulsar | <2.10.5 | |
| Apache Pulsar | >=2.11.0<2.11.2 | |
| Apache Pulsar | =3.0.0 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2023-37544
- https://lists.apache.org/thread/od0k9zts1toc9h9snbqq4pjpyx28mv4m
- http://www.openwall.com/lists/oss-security/2023/12/20/2
- https://github.com/apache/pulsar/commit/11ee36d0351644a006d2a8639bdcc714fb602358
- https://github.com/apache/pulsar/commit/894192fb6542e504be43034a3c33e90f9c6e528a
- https://github.com/apache/pulsar/commit/eac263e8f2a93d3b9f707b97c7bbcbc2a826569f
- https://github.com/advisories/GHSA-83q5-whqp-r8jr (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-37544?
CVE-2023-37544 is classified as a high severity vulnerability due to improper authentication in Apache Pulsar WebSocket Proxy.
How do I fix CVE-2023-37544?
To fix CVE-2023-37544, upgrade Apache Pulsar WebSocket Proxy to version 2.10.5, 2.11.2, or 3.0.1.
Which versions of Apache Pulsar are affected by CVE-2023-37544?
CVE-2023-37544 affects Apache Pulsar WebSocket Proxy versions from 2.8.0 to 2.10.4, and up to version 3.0.0.
What type of attack can CVE-2023-37544 facilitate?
CVE-2023-37544 can allow an attacker to connect to the /pingpong endpoint without authentication.
Is there a known exploit for CVE-2023-37544?
As of now, there are no publicly disclosed exploits specifically targeting CVE-2023-37544, but it poses a significant risk due to its nature.
- collector/oss-sec
- alias/CVE-2023-37544
- collector/github-advisory-latest
- alias/GHSA-83q5-whqp-r8jr
- collector/nvd-cve
- collector/github-advisory
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- collector/mitre-cve
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- canonical/apache pulsar
- version/apache pulsar/2.11.0
- version/apache pulsar/3.0.0