CVE-2024-39877: Apache airflow Apache Airflow Has DAG Author Vulnerability

HIGH
Advisory Identifier: GHSA-g5hv-r743-v8pm
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CVSS 8.8
CWE-94 CWE-277
Published
Advisory Summary

CVE-2024-39877 is a HIGH (CVSS 8.8) apache airflow has dag author vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Apache airflow libraries in the PyPI ecosystem. The issue involves apache airflow has dag author code execution possibility in airflow-scheduler. Remediation is available by upgrading affected packages to version 2.9.3.

CVE-2024-39877 at a Glance

CVE Identifier CVE-2024-39877
GHSA Identifier GHSA-g5hv-r743-v8pm
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Apache airflow
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:H/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 High (I:H)
Availability High (A:H)

How to Fix CVE-2024-39877

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: 2.9.3 
pip install apache-airflow>=2.9.3
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-2024-39877, 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 2.9.3), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. 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 2.4.0, and versions before 2.9.3, has a vulnerability that allows authenticated DAG authors to craft a doc_md parameter in a way that could execute arbitrary code in the scheduler context, which should be forbidden according to the Airflow Security model. Users should upgrade to version 2.9.3 or later which has removed the vulnerability.

CVE-2024-39877 Affected Apache airflow Versions

1 component(s)
Fixed Versions:
2.9.3
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow
pypi/apache-airflow
PyPI
≥ 2.4.0
< 2.9.3
2.9.3

References

NVD — CVE-2024-39877 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-39877
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/40522
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/8159f6e24704f5e0e3b3217cf79ecf5083dce531
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-2024-190.yaml
lists.apache.org/thread/1xhj9dkp37d6... WEB
https://lists.apache.org/thread/1xhj9dkp37d6pzn24ll2mf94wbqnb2y1
Apache airflow Security Information SECURITY
http://www.openwall.com/lists/oss-security/2024/07/16/7

Frequently Asked Questions

What is CVE-2024-39877?
CVE-2024-39877 is a security vulnerability in Apache airflow involving Apache Airflow has DAG Author Code Execution possibility in airflow-scheduler under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Apache airflow versions are affected?
Affected versions include releases prior to 2.9.3 across affected packages: apache-airflow.
What version fixes CVE-2024-39877?
Upgrading to 2.9.3 (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 2.9.3. Upgrade your dependency to 2.9.3 or later.
What is the CVSS score of CVE-2024-39877?
CVE-2024-39877 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-39877?
CVE-2024-39877 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check PyPI dependencies for CVE-2024-39877?
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-g5hv-r743-v8pm",
  "modified" : "2025-01-21T17:58:56Z",
  "published" : "2024-07-17T09:30:49Z",
  "aliases" : [ "CVE-2024-39877" ],
  "summary" : "Apache Airflow has DAG Author Code Execution possibility in airflow-scheduler",
  "details" : "Apache Airflow 2.4.0, and versions before 2.9.3, has a vulnerability that allows authenticated DAG authors to craft a doc_md parameter in a way that could execute arbitrary code in the scheduler context, which should be forbidden according to the Airflow Security model. Users should upgrade to version 2.9.3 or later which has removed the vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.0"
      }, {
        "fixed" : "2.9.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-39877"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/40522"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/8159f6e24704f5e0e3b3217cf79ecf5083dce531"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2024-190.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/1xhj9dkp37d6pzn24ll2mf94wbqnb2y1"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2024/07/16/7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-277", "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-07-17T17:59:44Z",
    "nvd_published_at" : "2024-07-17T08:15:02Z"
  }
}