Build Failure AnalyzerApplication · Jenkins
CVE-2023-43501
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 Build Failure Analyzer Plugin 2.4.1 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified hostname and port using attacker-specified username and password.
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 Build Failure Analyzer plugin lacks a permission check before allowing network connections to arbitrary hostnames and ports with user-specified credentials. Attackers with only Overall/Read permission (the lowest privileged access in Jenkins) can cause the Jenkins server to connect to attacker-controlled endpoints using arbitrary usernames and passwords.
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
Build Failure AnalyzerApplication
< 2.4.2CVSS 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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Identify if Build Failure Analyzer plugin is installedNavigate to Manage Jenkins > Manage Plugins > Installed tab, or query the plugin directory $JENKINS_HOME/plugins for a folder named build-failure-analyzerAffected if The plugin appears in the installed plugins list or the plugin folder exists in $JENKINS_HOME/plugins
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Determine the installed version of Build Failure AnalyzerIn Jenkins UI, go to Manage Jenkins > Manage Plugins > Installed and locate Build Failure Analyzer to read its version; alternatively, check the version file in $JENKINS_HOME/plugins/build-failure-analyzer/META-INF/MANIFEST.MFAffected if The version number is lower than 2.4.2 (e.g., 2.4.1, 2.4.0, or earlier)
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Verify plugin is enabled and activeConfirm the plugin status shows as 'Enabled' in the plugin manager, and check that the Build Failure Analyzer feature is configured under Manage Jenkins > Analyze build log configuration (or similar)Affected if The plugin is enabled and has an active configuration that processes build logs
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Check for low-privileged user accountsReview Manage Jenkins > Manage Users to identify accounts with only Overall/Read permission, or inspect $JENKINS_HOME/users/ directory for user configuration filesAffected if Any user account exists that has only Overall/Read permission (the lowest privilege level) and could potentially trigger the vulnerable network connection
You are affected if the Build Failure Analyzer plugin is installed with a version below 2.4.2, the plugin is enabled, and any user with Overall/Read permission exists in Jenkins.
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.
dbcve · scoped2.4.2
Update the Build Failure Analyzer plugin to a version that includes proper permission validation, or disable the plugin if no patched version is available.
2.4.2
- Navigate to the Jenkins dashboard
- Go to 'Manage Jenkins'
- Click on 'Manage Plugins'
- Select the 'Updates' tab
- Find 'Build Failure Analyzer' in the list
- Check the plugin and click 'Download now and install after restart'
- Wait for the plugin to update to version 2.4.2 or later
- Restart Jenkins to complete the installation
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Build Failure Analyzer
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-2023-43501 — 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-2023-43501 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
- No spam, self-promotion, credentials, or personal data