The Pulsar Functions Worker includes a capability that permits authenticated users to create functions where the function's implementation is referenced by a URL. The supported URL schemes include "file", "http", and "https". When a function is created using this method, the Functions Worker will retrieve the implementation from the URL provided by the user. However, this feature introduces a vulnerability that can be exploited by an attacker to gain unauthorized access to any file that the Pulsar Functions Worker process has permissions to read. This includes reading the process environment which potentially includes sensitive information, such as secrets. Furthermore, an attacker could leverage this vulnerability to use the Pulsar Functions Worker as a proxy to access the content of remote HTTP and HTTPS endpoint URLs. This could also be used to carry out denial of service attacks. This vulnerability also applies to the Pulsar Broker when it is configured with "functionsWorkerEnabled=true". This issue affects Apache Pulsar versions from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0. 2.10 Pulsar Function Worker users should upgrade to at least 2.10.6. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.4. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3. 3.1 Pulsar Function Worker users should upgrade to at least 3.1.3. 3.2 Pulsar Function Worker users should upgrade to at least 3.2.1. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions. The updated versions of Pulsar Functions Worker will, by default, impose restrictions on the creation of functions using URLs. For users who rely on this functionality, the Function Worker configuration provides two configuration keys: "additionalEnabledConnectorUrlPatterns" and "additionalEnabledFunctionsUrlPatterns". These keys allow users to specify a set of URL patterns that are permitted, enabling the creation of functions using URLs that match the defined patterns. This approach ensures that the feature remains available to those who require it, while limiting the potential for unauthorized access and exploitation.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The Pulsar Functions Worker includes a capability that permits authenticated users to create functions
    where the function's implementation is referenced by a URL. The supported URL schemes include "file",
    "http", and "https". When a function is created using this method, the Functions Worker will retrieve the
    implementation from the URL provided by the user. However, this feature introduces a vulnerability that
    can be exploited by an attacker to gain unauthorized access to any file that the Pulsar Functions Worker
    process has permissions to read. This includes reading the process environment which potentially includes
    sensitive information, such as secrets. Furthermore, an attacker could leverage this vulnerability to use
    the Pulsar Functions Worker as a proxy to access the content of remote HTTP and HTTPS endpoint URLs. This
    could also be used to carry out denial of service attacks. This vulnerability also applies to the Pulsar
    Broker when it is configured with "functionsWorkerEnabled=true". This issue affects Apache Pulsar versions
    from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0. 2.10
    Pulsar Function Worker users should upgrade to at least 2.10.6. 2.11 Pulsar Function Worker users should
    upgrade to at least 2.11.4. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3. 3.1 Pulsar
    Function Worker users should upgrade to at least 3.1.3. 3.2 Pulsar Function Worker users should upgrade to
    at least 3.2.1. Users operating versions prior to those listed above should upgrade to the aforementioned
    patched versions or newer versions. The updated versions of Pulsar Functions Worker will, by default,
    impose restrictions on the creation of functions using URLs. For users who rely on this functionality, the
    Function Worker configuration provides two configuration keys: "additionalEnabledConnectorUrlPatterns" and
    "additionalEnabledFunctionsUrlPatterns". These keys allow users to specify a set of URL patterns that are
    permitted, enabling the creation of functions using URLs that match the defined patterns. This approach
    ensures that the feature remains available to those who require it, while limiting the potential for
    unauthorized access and exploitation. (CVE-2024-27894)

ID	Name	Product	Family	Severity
413598	SCA: security update for org.apache.pulsar:pulsar-functions-worker (GHSA-c2x9-vw5h-39vc)	Tenable Cloud Security	SCA Checks	high
413598	SCA: security update for org.apache.pulsar:pulsar-functions-worker (GHSA-c2x9-vw5h-39vc)	Tenable Self-Hosted Container Security	SCA Checks	high

Detections

Analytics

CVE-2024-27894

high

Tenable Plugins

high

high