Chef SinatraApplication · Jenkins
CVE-2019-1003087
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 · uneditedA missing permission check in Jenkins Chef Sinatra Plugin in the ChefBuilderConfiguration.DescriptorImpl#doTestConnection form validation method allows attackers with Overall/Read permission to initiate a connection to an attacker-specified server.
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 confidenceMissing permission check in Jenkins Chef Sinatra Plugin's ChefBuilderConfiguration.DescriptorImpl#doTestConnection form validation method allows authenticated users with only Overall/Read permission to initiate connections to attacker-specified servers, enabling potential SSRF or internal network reconnaissance.
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
Chef SinatraApplication
<= 1.2CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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 Chef Sinatra Plugin is installedNavigate to Jenkins > Manage Jenkins > Manage Plugins > Installed, or use the Jenkins CLI: java -jar jenkins-cli.jar list-plugins. Look for 'chef-sinatra' or 'Chef Sinatra' in the plugin list.Affected if The plugin appears in the installed plugins list
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Check installed plugin versionIn Jenkins > Manage Jenkins > Manage Plugins > Installed, find the Chef Sinatra plugin and note the Version column. Alternatively, check the plugin's MANIFEST.mf file in the plugin's .hpi file.Affected if The version is 1.2 or lower, or if no version is listed but the plugin is present and predates the fix
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Confirm doTestConnection form validation is accessibleAccess the form validation endpoint directly or observe network traffic when using the Chef Builder configuration UI. The vulnerable endpoint is typically at: /descriptorByName/ChefBuilderConfiguration/doTestConnectionAffected if The endpoint responds to requests without requiring admin-level permissions
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Test permission boundary on the vulnerable endpointUsing an account with only Overall/Read permission (not Overall/Administer), attempt to access the doTestConnection endpoint or trigger a connection test from the Chef configuration page.Affected if A user with only Overall/Read permission can successfully invoke the connection test, triggering outbound connections to arbitrary servers
If the Chef Sinatra plugin is installed at version 1.2 or lower AND the doTestConnection endpoint can be invoked by users with only Overall/Read permission, the environment is vulnerable to CVE-2019-1003087.
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 dataAdd a proper permission check (e.g., require Overall/Administer) to the doTestConnection method or upgrade to a patched version of the Chef Sinatra Plugin.
Fix this in Chef Sinatra
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 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 $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1003087 — 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-2019-1003087 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
- No weaponised exploit code, or anything meant to cause harm
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