Authenticated file disclosure and SSRF via unrestricted URLs
Published Mar 12, 2024 · Updated Feb 13, 2025
SSRF and file disclosure in Apache Pulsar Functions Worker allow remote authenticated users to read local files and fetch arbitrary URLs. The worker accepts user-supplied file, HTTP, and HTTPS implementation URLs and retrieves them without restricting the target, exposing any file readable by its process and permitting proxy requests. Function-creation access is required; brokers are affected only when functionsWorkerEnabled is true, and consequences include secret exposure and service interruption.
Summary
What happened
SSRF and file disclosure in Apache Pulsar Functions Worker allow remote authenticated users to read local files and fetch arbitrary URLs. The worker accepts user-supplied file, HTTP, and HTTPS implementation URLs and retrieves them without restricting the target, exposing any file readable by its process and permitting proxy requests. Function-creation access is required; brokers are affected only when functionsWorkerEnabled is true, and consequences include secret exposure and service interruption.
The record
- CVE
- CVE-2024-27894
- Published
- Mar 12, 2024
- Updated
- Feb 13, 2025
- Vendor
- The Apache Software Foundation
- Product
- Apache Pulsar
- Classifications
- CWE-552, CWE-20, T1005, T1090
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 12, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.11.0 <2.11.4
- Affected versionversion=2.4.0 <2.10.6
- Affected versionversion=3.0.0 <3.0.3
- Affected versionversion=3.1.0 <3.1.3
- Affected versionversion=3.2.0 <3.2.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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