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AirflowApplication · Apache

CVE-2023-51702

MEDIUM · 6.5 CVSS v3.1 Published 2024-01-24
Fix available
A fix is available. Upgrade to 2.6.1 / 7.0.0 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Since version 5.2.0, when using deferrable mode with the path of a Kubernetes configuration file for authentication, the Airflow worker serializes this configuration file as a dictionary and sends it to the triggerer by storing it in metadata without any encryption. Additionally, if used with an Airflow version between 2.3.0 and 2.6.0, the configuration dictionary will be logged as plain text in the triggerer service without masking. This allows anyone with access to the metadata or triggerer log to obtain the configuration file and use it to access the Kubernetes cluster. This behavior was changed in version 7.0.0, which stopped serializing the file contents and started providing the file path instead to read the contents into the trigger. Users are recommended to upgrade to version 7.0.0, which fixes this issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AirflowApplication
Affected:>= 2.3.0, < 2.6.1
Apache Airflow Providers Cncf KubernetesWeb server / proxy
Affected:>= 5.2.0, < 7.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.6.1 / 7.0.0 or later
Fixed in 2.6.17.0.0
Vendor patch github.com →
Recommended fix High confidence

apache-airflow-providers-cncf-kubernetes 7.0.0 (with Airflow >= 2.6.1)

  1. 1. Identify all Airflow deployments using the Apache Airflow Providers Cncf Kubernetes package in deferrable mode with Kubernetes configuration file authentication.
  2. 2. Upgrade the 'apache-airflow-providers-cncf-kubernetes' package from versions 5.2.0-6.x to version 7.0.0 or later.
  3. 3. If using Airflow core, ensure Airflow version is 2.6.1 or later to align with the provider upgrade.
  4. 4. After upgrading, verify that the Kubernetes configuration file path is accessible to the triggerer service (the triggerer now reads from the file path rather than receiving serialized content).
  5. 5. Review triggerer logs to confirm no sensitive configuration data is being logged in plain text.
Caveat The behavior changed from serializing file contents to passing file path - ensure triggerer has read access to the Kubernetes config file at the specified path

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-51702 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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