CVE-2023-37579
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
CVE-2023-37579 describes an incorrect authorization vulnerability in Apache Pulsar Function Worker that allows authenticated users to access source and sink configurations without proper permissions. Many of these configurations contain credentials, which could lead to credential leakage.
Risk Assessment
Organizations may be exposed to credential leakage, potentially leading to unauthorized access to systems and resources. Although there is no known way to enumerate another tenant's sources or sinks, the risk remains significant.
Recommendation
It is recommended to upgrade Apache Pulsar Function Worker to version 2.10.4 or 2.11.1 to patch this vulnerability. Users running versions 2.9.* and earlier should also upgrade to one of the mentioned patched versions.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

