Azure Container ServiceApplication · Jenkins
CVE-2020-2168
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 · uneditedJenkins Azure Container Service Plugin 1.0.1 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types, resulting in a remote code execution vulnerability.
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 · high confidenceThe Jenkins Azure Container Service Plugin versions 1.0.1 and earlier contains an insecure YAML parser configuration that allows instantiation of arbitrary types during YAML deserialization. This deserialization vulnerability can be exploited to achieve remote code execution on the Jenkins controller or agent nodes processing malicious YAML configuration files.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
Azure Container ServiceApplication
<= 1.0.1CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify if Azure Container Service Plugin is installedIn Jenkins, go to Manage Jenkins > Manage Plugins > Installed tab and search for 'Azure Container Service', or check the plugin directory on the controller for the presence of the azure-container-service-plugin.*.jpi file.Affected if The plugin is listed as installed and the version cannot be determined or is 1.0.1 or earlier.
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Determine the installed plugin versionIn Jenkins, go to Manage Jenkins > Manage Plugins > Installed tab, find 'Azure Container Service' in the list and note the version number displayed in the 'Version' column.Affected if The version listed is 1.0.1 or earlier.
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Identify pipelines or jobs using the pluginSearch Jenkins job configurations for 'azureContainerService' or 'acs' as the service name, or look for pipeline scripts containing 'azureContainerService' or Kubernetes/ACS related steps from this plugin.Affected if Any Jenkins job or pipeline references the Azure Container Service plugin for deployment or configuration.
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Check for YAML configuration files processed by the pluginReview the job configurations identified in the previous step for YAML files passed to the plugin, particularly any Azure Kubernetes Service (AKS) or container orchestration configurations that may be supplied externally.Affected if The plugin is configured to process YAML files from sources that may be untrusted or from external pipelines.
The environment is affected if the Azure Container Service Plugin version 1.0.1 or earlier is installed and is used to process YAML configuration files.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataUpgrade the Jenkins Azure Container Service Plugin to version 1.0.2 or later, which implements secure YAML parsing with type restrictions. If immediate patching is not possible, restrict YAML file processing to trusted sources and monitor for suspicious pipeline activity.
Fix this in Azure Container Service
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-2168 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-2168 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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