CVE-2024-27317: Apache Pulsar Pulsar Functions Worker's Archive Extraction Vulnerability

CRITICAL
Advisory Identifier: GHSA-jg2g-4rjg-cmqh
CVSS 9.9
CWE-22
Published
Advisory Summary

CVE-2024-27317 is a CRITICAL (CVSS 9.9) pulsar functions worker's archive extraction vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Apache Pulsar libraries in the Maven ecosystem. The issue involves pulsar functions worker's archive extraction vulnerability allows unauthorized file modification. Remediation is available by upgrading affected packages to version 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1.

CVE-2024-27317 at a Glance

CVE Identifier CVE-2024-27317
GHSA Identifier GHSA-jg2g-4rjg-cmqh
Severity CRITICAL
CVSS v3.1 Base Score 9.9
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Apache Pulsar
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.9

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:C/C:H/I:H/A:H).

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

How to Fix CVE-2024-27317

To remediate this vulnerability, upgrade all affected Apache Pulsar 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: 2.10.6
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>2.10.6</version>
</dependency>
org.apache.pulsar:pulsar-functions-worker fixed: 2.11.4
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>2.11.4</version>
</dependency>
org.apache.pulsar:pulsar-functions-worker fixed: 3.0.3
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>3.0.3</version>
</dependency>
org.apache.pulsar:pulsar-functions-worker fixed: 3.1.3
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>3.1.3</version>
</dependency>
org.apache.pulsar:pulsar-functions-worker fixed: 3.2.1
<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-functions-worker</artifactId>
    <version>3.2.1</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-2024-27317, 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 Apache Pulsar in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.10.6), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Apache Pulsar, 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

In Pulsar Functions Worker, authenticated users can upload functions in jar or nar files. These files, essentially zip files, are extracted by the Functions Worker. However, if a malicious file is uploaded, it could exploit a directory traversal vulnerability. This occurs when the filenames in the zip files, which aren't properly validated, contain special elements like "..", altering the directory path. This could allow an attacker to create or modify files outside of the designated extraction directory, potentially influencing system behavior. 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.

CVE-2024-27317 Affected Apache Pulsar Versions

5 component(s)
Fixed Versions:
2.10.62.11.43.0.33.1.33.2.1
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.pulsar:pulsar-functions-worker
Maven
≥ 2.4.0
< 2.10.6
2.10.6
org.apache.pulsar:pulsar-functions-worker
Maven
≥ 2.11.0
< 2.11.4
2.11.4
org.apache.pulsar:pulsar-functions-worker
Maven
≥ 3.0.0
< 3.0.3
3.0.3
org.apache.pulsar:pulsar-functions-worker
Maven
≥ 3.1.0
< 3.1.3
3.1.3
org.apache.pulsar:pulsar-functions-worker
Maven
≥ 3.2.0
< 3.2.1
3.2.1

References

Frequently Asked Questions

What is CVE-2024-27317?
CVE-2024-27317 is a security vulnerability in Apache Pulsar involving Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Apache Pulsar versions are affected?
Affected versions include releases prior to 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1 across affected packages: org.apache.pulsar:pulsar-functions-worker.
What version fixes CVE-2024-27317?
Upgrading to 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1 (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 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1. Upgrade your dependency to 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1 or later.
What is the CVSS score of CVE-2024-27317?
CVE-2024-27317 has a CVSS v3.1 base score of 9.9 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2024-27317?
CVE-2024-27317 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Maven dependencies for CVE-2024-27317?
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-jg2g-4rjg-cmqh",
  "modified" : "2025-01-21T18:19:44Z",
  "published" : "2024-03-12T21:30:59Z",
  "aliases" : [ "CVE-2024-27317" ],
  "summary" : "Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification",
  "details" : "In Pulsar Functions Worker, authenticated users can upload functions in jar or nar files. These files, essentially zip files, are extracted by the Functions Worker. However, if a malicious file is uploaded, it could exploit a directory traversal vulnerability. This occurs when the filenames in the zip files, which aren't properly validated, contain special elements like \"..\", altering the directory path. This could allow an attacker to create or modify files outside of the designated extraction directory, potentially influencing system behavior. This vulnerability also applies to the Pulsar Broker when it is configured with \"functionsWorkerEnabled=true\".\n\nThis 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. \n\n2.10 Pulsar Function Worker users should upgrade to at least 2.10.6.\n2.11 Pulsar Function Worker users should upgrade to at least 2.11.4.\n3.0 Pulsar Function Worker users should upgrade to at least 3.0.3.\n3.1 Pulsar Function Worker users should upgrade to at least 3.1.3.\n3.2 Pulsar Function Worker users should upgrade to at least 3.2.1.\n\nUsers operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.0"
      }, {
        "fixed" : "2.10.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.0"
      }, {
        "fixed" : "2.11.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.1.0"
      }, {
        "fixed" : "3.1.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.pulsar:pulsar-functions-worker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.2.0"
      }, {
        "fixed" : "3.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-27317"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/pulsar"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/ct9xmvlf7lompc1pxvlsb60qstfsm9po"
  }, {
    "type" : "WEB",
    "url" : "https://pulsar.apache.org/security/CVE-2024-27317"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2024/03/12/10"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-14T21:39:31Z",
    "nvd_published_at" : "2024-03-12T19:15:47Z"
  }
}