CVE-2023-37579: Pulsar functions worker Apache Pulsar Function Worker Incorrect Vulnerability

MODERATE
Advisory Identifier: GHSA-74mc-g2xv-pch2
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CVSS 6.5
CWE-863
Published
Advisory Summary

CVE-2023-37579 is a MODERATE (CVSS 6.5) apache pulsar function worker incorrect vulnerability (CWE-863: Incorrect Authorization) affecting Pulsar functions worker libraries in the Maven ecosystem. The issue involves apache pulsar function worker incorrect authorization vulnerability. Remediation is available by upgrading affected packages to version 2.10.4, 2.11.1.

CVE-2023-37579 at a Glance

CVE Identifier CVE-2023-37579
GHSA Identifier GHSA-74mc-g2xv-pch2
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-863: Incorrect Authorization
Affected Product Pulsar functions worker
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-37579

To remediate this vulnerability, upgrade all affected Pulsar functions worker dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.pulsar:pulsar-functions-worker fixed: 2.10.4 
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>2.10.4</version>
</dependency>
org.apache.pulsar:pulsar-functions-worker fixed: 2.11.1 
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>2.11.1</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.pulsar

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-37579, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.pulsar

Analyze the terminal output to locate any version of Pulsar functions worker in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.10.4), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.pulsar command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Pulsar functions worker, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2023-37579 Affected Pulsar functions worker Versions

2 component(s)
Fixed Versions:
2.10.42.11.1
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.pulsar:pulsar-functions-worker
maven/org.apache.pulsar/pulsar-functions-worker
Maven
< 2.10.4
2.10.4
org.apache.pulsar:pulsar-functions-worker
maven/org.apache.pulsar/pulsar-functions-worker
Maven
≥ 2.11.0
< 2.11.1
All 1 versions
2.11.0
2.11.1

References

NVD — CVE-2023-37579 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-37579
Pulsar functions worker Source Repository REPOSITORY
https://github.com/apache/pulsar
lists.apache.org/thread/0dmn3cb5n2p0... WEB
https://lists.apache.org/thread/0dmn3cb5n2p08o3cpj3ycfhzfqs2ppwz

Frequently Asked Questions

What is CVE-2023-37579?
CVE-2023-37579 is a security vulnerability in Pulsar functions worker involving Apache Pulsar Function Worker Incorrect Authorization vulnerability under CWE-863: Incorrect Authorization.
Which Pulsar functions worker versions are affected?
Affected versions include releases prior to 2.10.4, 2.11.1 across affected packages: org.apache.pulsar:pulsar-functions-worker.
What version fixes CVE-2023-37579?
Upgrading to 2.10.4, 2.11.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pulsar-functions-worker affected?
Yes, org.apache.pulsar:pulsar-functions-worker is affected in releases prior to 2.10.4, 2.11.1. Upgrade your dependency to 2.10.4, 2.11.1 or later.
What is the CVSS score of CVE-2023-37579?
CVE-2023-37579 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-37579?
CVE-2023-37579 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2023-37579?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.pulsar'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-74mc-g2xv-pch2",
  "modified" : "2023-07-20T19:16:24Z",
  "published" : "2023-07-12T12:31:36Z",
  "aliases" : [ "CVE-2023-37579" ],
  "summary" : "Apache Pulsar Function Worker Incorrect Authorization vulnerability",
  "details" : "Incorrect Authorization vulnerability in Apache Software Foundation Apache Pulsar Function Worker.\n\nThis issue affects Apache Pulsar: before 2.10.4, and 2.11.0.\n\nAny 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.\n\nThe recommended mitigation for impacted users is to upgrade the Pulsar Function Worker to a patched version.\n\n2.10 Pulsar Function Worker users should upgrade to at least 2.10.4.\n2.11 Pulsar Function Worker users should upgrade to at least 2.11.1.\n3.0 Pulsar Function Worker users are unaffected.\nAny users running the Pulsar Function Worker for 2.9.* and earlier should upgrade to one of the above patched versions.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.10.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.0"
      }, {
        "fixed" : "2.11.1"
      } ]
    } ],
    "versions" : [ "2.11.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-37579"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/pulsar"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/0dmn3cb5n2p08o3cpj3ycfhzfqs2ppwz"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-12T17:30:28Z",
    "nvd_published_at" : "2023-07-12T10:15:11Z"
  }
}