CVE-2023-42781: Apache airflow Apache Airflow Vulnerable To Exposure Vulnerability

HIGH
Advisory Identifier: GHSA-r7x6-xfcm-3mxv
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CVSS 6.5
CWE-200
Published
Advisory Summary

CVE-2023-42781 is a HIGH (CVSS 6.5) apache airflow vulnerable to exposure vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Apache airflow libraries in the PyPI ecosystem. The issue involves apache airflow vulnerable to exposure of sensitive information to an unauthorized actor. Remediation is available by upgrading affected packages to version 2.7.3.

CVE-2023-42781 at a Glance

CVE Identifier CVE-2023-42781
GHSA Identifier GHSA-r7x6-xfcm-3mxv
Severity HIGH
CVSS v3.1 Base Score 6.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Apache airflow
Package Ecosystem PyPI
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-2023-42781

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: 2.7.3 
pip install apache-airflow>=2.7.3
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-2023-42781, 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 2.7.3), 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. 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, versions before 2.7.3, has a vulnerability that allows an authorized user who has access to read specific DAGs only, to read information about task instances in other DAGs.  This is a different issue than CVE-2023-42663 but leading to similar outcome. Users of Apache Airflow are advised to upgrade to version 2.7.3 or newer to mitigate the risk associated with this vulnerability.

CVE-2023-42781 Affected Apache airflow Versions

1 component(s)
Fixed Versions:
2.7.3
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow
pypi/apache-airflow
PyPI
< 2.7.3
2.7.3

References

NVD — CVE-2023-42781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-42781
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/34939
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/33ec72948f74f56f2adb5e2d388e60e88e8a3fa3
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-2023-231.yaml
lists.apache.org/thread/7dnl8nszdxqy... WEB
https://lists.apache.org/thread/7dnl8nszdxqyns57f3dw0sloy5dfl9o1
Apache airflow Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/11/12/2

Frequently Asked Questions

What is CVE-2023-42781?
CVE-2023-42781 is a security vulnerability in Apache airflow involving Apache Airflow vulnerable to Exposure of Sensitive Information to an Unauthorized Actor under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Apache airflow versions are affected?
Affected versions include releases prior to 2.7.3 across affected packages: apache-airflow.
What version fixes CVE-2023-42781?
Upgrading to 2.7.3 (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 2.7.3. Upgrade your dependency to 2.7.3 or later.
What is the CVSS score of CVE-2023-42781?
CVE-2023-42781 has a CVSS v3.1 base score of 6.5 (HIGH) 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-2023-42781?
CVE-2023-42781 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check PyPI dependencies for CVE-2023-42781?
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-r7x6-xfcm-3mxv",
  "modified" : "2024-11-18T16:26:33Z",
  "published" : "2023-11-12T15:30:20Z",
  "aliases" : [ "CVE-2023-42781" ],
  "summary" : "Apache Airflow vulnerable to Exposure of Sensitive Information to an Unauthorized Actor",
  "details" : "Apache Airflow, versions before 2.7.3, has a vulnerability that allows an authorized user who has access to read specific DAGs only, to read information about task instances in other DAGs.  This is a different issue than CVE-2023-42663 but leading to similar outcome.\nUsers of Apache Airflow are advised to upgrade to version 2.7.3 or newer to mitigate the risk associated with this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-42781"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/34939"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/33ec72948f74f56f2adb5e2d388e60e88e8a3fa3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2023-231.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/7dnl8nszdxqyns57f3dw0sloy5dfl9o1"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/11/12/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-14T20:35:47Z",
    "nvd_published_at" : "2023-11-12T14:15:25Z"
  }
}