CVE-2023-37379: Apache airflow Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-x2mh-8fmc-rqgh
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CVSS 8.1
CWE-400 CWE-918 CWE-200
Published
Advisory Summary

CVE-2023-37379 is a HIGH (CVSS 8.1) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Apache airflow libraries in the PyPI ecosystem. The issue involves apache airflow denial of service vulnerability. Remediation is available by upgrading affected packages to version 2.7.0b1.

CVE-2023-37379 at a Glance

CVE Identifier CVE-2023-37379
GHSA Identifier GHSA-x2mh-8fmc-rqgh
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Apache airflow
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:H).

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 High (A:H)

How to Fix CVE-2023-37379

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

apache-airflow fixed: 2.7.0b1 
pip install apache-airflow>=2.7.0b1
Verify Direct and Transitive Dependencies

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

pip show apache-airflow

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-37379, inspect your installed packages using pip:

pip show apache-airflow

Analyze the terminal output to locate any version of Apache airflow in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.7.0b1), your application is affected.

Note: The pip show apache-airflow command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Apache airflow, 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

Apache Airflow, in versions prior to 2.7.0, contains a security vulnerability that can be exploited by an authenticated user possessing Connection edit privileges. This vulnerability allows the user to access connection information and exploit the test connection feature by sending many requests, leading to a denial of service (DoS) condition on the server. Furthermore, malicious actors can leverage this vulnerability to establish harmful connections with the server. Users of Apache Airflow are strongly advised to upgrade to version 2.7.0 or newer to mitigate the risk associated with this vulnerability. Additionally, administrators are encouraged to review and adjust user permissions to restrict access to sensitive functionalities, reducing the attack surface.

CVE-2023-37379 Affected Apache airflow Versions

1 component(s)
Fixed Versions:
2.7.0b1
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow
pypi/apache-airflow
PyPI
< 2.7.0b1
2.7.0b1

References

NVD — CVE-2023-37379 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-37379
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/32052
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/e4c3ecf8ceaefa17525b495e4bcb5b2f41309603
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow
Apache airflow Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2023-152.yaml
lists.apache.org/thread/g5c9vcn27lr1... WEB
https://lists.apache.org/thread/g5c9vcn27lr14go48thrjpo6f4vw571r
Apache airflow Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/08/23/4

Frequently Asked Questions

What is CVE-2023-37379?
CVE-2023-37379 is a security vulnerability in Apache airflow involving Apache Airflow denial of service vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Apache airflow versions are affected?
Affected versions include releases prior to 2.7.0b1 across affected packages: apache-airflow.
What version fixes CVE-2023-37379?
Upgrading to 2.7.0b1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is apache-airflow affected?
Yes, apache-airflow is affected in releases prior to 2.7.0b1. Upgrade your dependency to 2.7.0b1 or later.
What is the CVSS score of CVE-2023-37379?
CVE-2023-37379 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2023-37379?
CVE-2023-37379 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2023-37379?
Run the dependency tree command: 'pip show apache-airflow'. 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-x2mh-8fmc-rqgh",
  "modified" : "2025-02-13T19:11:02Z",
  "published" : "2023-08-23T18:30:34Z",
  "aliases" : [ "CVE-2023-37379" ],
  "summary" : "Apache Airflow denial of service vulnerability",
  "details" : "Apache Airflow, in versions prior to 2.7.0, contains a security vulnerability that can be exploited by an authenticated user possessing Connection edit privileges. This vulnerability allows the user to access connection information and exploit the test connection feature by sending many requests, leading to a denial of service (DoS) condition on the server. Furthermore, malicious actors can leverage this vulnerability to establish harmful connections with the server.\n\nUsers of Apache Airflow are strongly advised to upgrade to version 2.7.0 or newer to mitigate the risk associated with this vulnerability. Additionally, administrators are encouraged to review and adjust user permissions to restrict access to sensitive functionalities, reducing the attack surface.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.0b1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-37379"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/32052"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/e4c3ecf8ceaefa17525b495e4bcb5b2f41309603"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2023-152.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/g5c9vcn27lr14go48thrjpo6f4vw571r"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/08/23/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-400", "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-24T12:52:17Z",
    "nvd_published_at" : "2023-08-23T16:15:09Z"
  }
}