CVE-2011-4115
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 · uneditedParallel::ForkManager module before 1.0.0 for Perl does not properly handle temporary files.
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 · moderate confidenceThe Parallel::ForkManager Perl module before version 1.0.0 insecurely handles temporary files, likely due to predictable file paths, world-readable permissions, or symlink race conditions. This allows local attackers to potentially overwrite or read sensitive data by exploiting the temp file creation process.
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< 1.0.0CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Check installed Parallel::ForkManager versionRun `perldoc Parallel::ForkManager | head -20` or use `perl -MParallel::ForkManager -e 'print $Parallel::ForkManager::VERSION'` to see the installed version numberAffected if Version is below 1.0.0 (e.g., 0.9.x, 0.8.x, etc.)
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Verify temp file creation code existsSearch your codebase for uses of Parallel::ForkManager->new() or the module's temp file functions; check if your application creates temporary files during fork operationsAffected if Your application or dependent code uses Parallel::ForkManager and creates temp files during execution
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Inspect temp file permissionsRun your application with Parallel::ForkManager, then check permissions on any created temp files using `ls -la` in the temp directory (usually /tmp)Affected if Temp files are created with world-readable permissions (e.g., 0644) or in a shared/tmp directory accessible to other users
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Check for predictable temp file pathsMonitor temp file creation during runtime and examine the naming pattern; look for files with predictable names or patterns in /tmpAffected if Temp file names follow a predictable pattern (e.g., no random component, sequential naming)
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Review module installation locationLocate the installed module with `perl -e 'print join("\n", @INC)'` and check the Parallel/ForkManager.pm file version directlyAffected if The module file shows version below 1.0.0 in the distribution metadata
You are affected if Parallel::ForkManager version is below 1.0.0 AND your application uses the module in a way that creates temporary files accessible to other local users.
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 data1.0.0
Upgrade Parallel::ForkManager to version 1.0.0 or later. If upgrade is not possible, ensure the application runs with minimal privileges and in isolated environments to limit symlink attack vectors.
- Consultation1.0 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 $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-4115 — 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-2011-4115 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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