# CVE-2023-37579: Apache Pulsar Function Worker: Incorrect Authorization for Function Worker Can Leak Sink/Source Credentials > Authenticated users can retrieve source or sink configurations, potentially leaking embedded credentials, requiring an upgrade to patched versions. - **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 12 Jul 2023 - **Updated:** 8 Oct 2024 - **Also known as:** GHSA-74mc-g2xv-pch2 ## What is CVE-2023-37579? CVE-2023-37579 is a high-severity missing authorization vulnerability in Apache Pulsar Function Worker, published on 12 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description Incorrect Authorization vulnerability in Apache Software Foundation Apache Pulsar Function Worker. This issue affects Apache Pulsar: before 2.10.4, and 2.11.0. Any authenticated user can retrieve a source's configuration or a sink's configuration without authorization. Many sources and sinks contain credentials in the configuration, which could lead to leaked credentials. This vulnerability is mitigated by the fact that there is not a known way for an authenticated user to enumerate another tenant's sources or sinks, meaning the source or sink name would need to be guessed in order to exploit this vulnerability. The recommended mitigation for impacted users is to upgrade the Pulsar Function Worker to a patched version. 2.10 Pulsar Function Worker users should upgrade to at least 2.10.4. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.1. 3.0 Pulsar Function Worker users are unaffected. Any users running the Pulsar Function Worker for 2.9.* and earlier should upgrade to one of the above patched versions. Weakness: CWE-863 (Incorrect Authorization) ## Which versions are affected by CVE-2023-37579? 4 open source packages ship an affected version, including org.apache.pulsar:pulsar-functions-worker. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `org.apache.pulsar:pulsar-functions-worker` | Maven | All versions | 2.10.4 | | `org.apache.pulsar:pulsar-functions-worker` | Maven | All versions | 2.10.4 | | `org.apache.pulsar:pulsar-functions-worker` | Maven | From 2.11.0 | 2.11.1 | | `org.apache.pulsar:pulsar-functions-worker` | Maven | From 2.11.0 | 2.11.1 | Products: Apache Pulsar. ## How do I fix CVE-2023-37579? Upgrade org.apache.pulsar:pulsar-functions-worker to a fixed version for your release line: 2.10.4 or 2.11.1. ## Is CVE-2023-37579 being exploited? There is no known exploitation of CVE-2023-37579 in the wild and no public exploit code. ## Other vulnerabilities in Apache Pulsar Function Worker - [CVE-2021-22160](https://insights.sbomify.com/CVE-2021-22160/): Authentication with JWT allows use of “none”-algorithm (critical 9.8) - [CVE-2023-30429](https://insights.sbomify.com/CVE-2023-30429/): Apache Pulsar: Incorrect Authorization for Function Worker when using mTLS Authentication through Pulsar Proxy (critical 9.6) - [CVE-2024-27135](https://insights.sbomify.com/CVE-2024-27135/): Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution (high 8.5) - [CVE-2024-27894](https://insights.sbomify.com/CVE-2024-27894/): Apache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS Proxying (high 8.5) - [CVE-2024-27317](https://insights.sbomify.com/CVE-2024-27317/): Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification (high 8.4) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2023-37579 and fix it if it is affected. What it is: CVE-2023-37579 is a high-severity missing authorization vulnerability in Apache Pulsar Function Worker, published on 12 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2023-37579 in the wild and no public exploit code. Affected packages and fixed versions: - org.apache.pulsar:pulsar-functions-worker (Maven): affected all versions; fixed in 2.10.4 - org.apache.pulsar:pulsar-functions-worker (Maven): affected all versions; fixed in 2.10.4 - org.apache.pulsar:pulsar-functions-worker (Maven): affected from 2.11.0; fixed in 2.11.1 - org.apache.pulsar:pulsar-functions-worker (Maven): affected from 2.11.0; fixed in 2.11.1 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2023-37579/ (Markdown: https://insights.sbomify.com/CVE-2023-37579/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2023-37579 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-37579 - OSV: https://osv.dev/vulnerability/CVE-2023-37579 --- From sbomify Insights: https://insights.sbomify.com/CVE-2023-37579/ Summaries are generated and may contain mistakes; the official description above is the record.