CVE-2023-30428: Pulsar broker Apache Pulsar Broker's Rest Producer Vulnerability

HIGH
Advisory Identifier: GHSA-j2r7-3rvw-g7gx
CVSS 8.2
CWE-863
Published
Advisory Summary

CVE-2023-30428 is a HIGH (CVSS 8.2) apache pulsar broker's rest producer vulnerability (CWE-863: Incorrect Authorization) affecting Pulsar broker libraries in the Maven ecosystem. The issue involves apache pulsar broker's rest producer vulnerable to incorrect authorization. Remediation is available by upgrading affected packages to version 2.10.4, 2.11.1.

CVE-2023-30428 at a Glance

CVE Identifier CVE-2023-30428
GHSA Identifier GHSA-j2r7-3rvw-g7gx
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-863: Incorrect Authorization
Affected Product Pulsar broker
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.2

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

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

How to Fix CVE-2023-30428

To remediate this vulnerability, upgrade all affected Pulsar broker 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-broker fixed: 2.10.4
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-broker</artifactId>
    <version>2.10.4</version>
</dependency>
org.apache.pulsar:pulsar-broker fixed: 2.11.1
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-broker</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-2023-30428, 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 broker 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 broker, 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 Broker's Rest Producer allows authenticated user with a custom HTTP header to produce a message to any topic using the broker's admin role. This issue affects Apache Pulsar Brokers: from 2.9.0 through 2.9.5, from 2.10.0 before 2.10.4, 2.11.0. The vulnerability is exploitable when an attacker can connect directly to the Pulsar Broker. If an attacker is connecting through the Pulsar Proxy, there is no known way to exploit this authorization vulnerability. There are two known risks for affected users. First, an attacker could produce garbage messages to any topic in the cluster. Second, an attacker could produce messages to the topic level policies topic for other tenants and influence topic settings that could lead to exfiltration and/or deletion of messages for other tenants. 2.8 Pulsar Broker users and earlier are unaffected. 2.9 Pulsar Broker users should upgrade to one of the patched versions. 2.10 Pulsar Broker users should upgrade to at least 2.10.4. 2.11 Pulsar Broker users should upgrade to at least 2.11.1. 3.0 Pulsar Broker users are unaffected.

CVE-2023-30428 Affected Pulsar broker Versions

2 component(s)
Fixed Versions:
2.10.42.11.1
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.pulsar:pulsar-broker
Maven
≥ 2.9.0
< 2.10.4
2.10.4
org.apache.pulsar:pulsar-broker
Maven
≥ 2.11.0
< 2.11.1
All 1 versions
2.11.0
2.11.1

References

Frequently Asked Questions

What is CVE-2023-30428?
CVE-2023-30428 is a security vulnerability in Pulsar broker involving Apache Pulsar Broker's Rest Producer vulnerable to Incorrect Authorization under CWE-863: Incorrect Authorization.
Which Pulsar broker versions are affected?
Affected versions include releases prior to 2.10.4, 2.11.1 across affected packages: org.apache.pulsar:pulsar-broker.
What version fixes CVE-2023-30428?
Upgrading to 2.10.4, 2.11.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pulsar-broker affected?
Yes, org.apache.pulsar:pulsar-broker 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-2023-30428?
CVE-2023-30428 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2023-30428?
CVE-2023-30428 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-2023-30428?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j2r7-3rvw-g7gx",
  "modified" : "2023-07-12T17:30:13Z",
  "published" : "2023-07-12T12:31:36Z",
  "aliases" : [ "CVE-2023-30428" ],
  "summary" : "Apache Pulsar Broker's Rest Producer vulnerable to Incorrect Authorization",
  "details" : "Incorrect Authorization vulnerability in Apache Software Foundation Apache Pulsar Broker's Rest Producer allows authenticated user with a custom HTTP header to produce a message to any topic using the broker's admin role.\nThis issue affects Apache Pulsar Brokers: from 2.9.0 through 2.9.5, from 2.10.0 before 2.10.4, 2.11.0.\n\nThe vulnerability is exploitable when an attacker can connect directly to the Pulsar Broker. If an attacker is connecting through the Pulsar Proxy, there is no known way to exploit this authorization vulnerability.\n\nThere are two known risks for affected users. First, an attacker could produce garbage messages to any topic in the cluster. Second, an attacker could produce messages to the topic level policies topic for other tenants and influence topic settings that could lead to exfiltration and/or deletion of messages for other tenants.\n\n2.8 Pulsar Broker users and earlier are unaffected.\n2.9 Pulsar Broker users should upgrade to one of the patched versions.\n2.10 Pulsar Broker users should upgrade to at least 2.10.4.\n2.11 Pulsar Broker users should upgrade to at least 2.11.1.\n3.0 Pulsar Broker users are unaffected.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-broker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.9.0"
      }, {
        "fixed" : "2.10.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-broker"
    },
    "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-2023-30428"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/pulsar"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/v39hqtgrmyxr85rmofwvgrktnflbq3q5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-12T17:30:13Z",
    "nvd_published_at" : "2023-07-12T10:15:09Z"
  }
}