FlumedbApplication · Flumedb Project
CVE-2021-45684
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 · uneditedAn issue was discovered in the flumedb crate through 2021-01-07 for Rust. read_entry may read from uninitialized memory locations.
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 confidenceA memory safety vulnerability in the flumedb Rust crate allows the read_entry function to read from uninitialized memory locations, potentially exposing sensitive data or causing undefined behavior. This occurs due to improper memory initialization before read operations.
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
FlumedbApplication
<= 0.1.5CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify flumedb installationCheck your project's Cargo.lock file for the flumedb entry and note the version number, or run `cargo tree -p flumedb` to see the installed versionAffected if The version listed is 0.1.5 or lower
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Locate read_entry usageSearch your codebase for calls to read_entry function from flumedb, using grep or IDE search for 'read_entry'Affected if Your code directly calls the read_entry function from flumedb
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Check for data read operationsReview any code paths where flumedb is used to read stored data entries, particularly during deserialization or data retrieval operationsAffected if Your application reads data from flumedb storage using the vulnerable function
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Verify debug build or memory inspectionIf running in debug mode or with memory sanitizers enabled, observe whether read_entry returns unexpected or garbage values when reading entriesAffected if Uninitialized memory contents appear in read results or undefined behavior is observed
You are affected if your project depends on flumedb version 0.1.5 or lower and your code executes the read_entry function to retrieve stored data.
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 · scopedUpdate to a patched version of flumedb once released. If no patch is available, implement input validation or consider alternative data storage solutions that properly initialize memory before read operations.
flumedb version > 0.1.5 (check crates.io for latest fixed release)
- Check your project's Cargo.lock for flumedb dependency version
- Run `cargo update flumedb` to update to a version beyond 0.1.5
- Verify the update with `cargo tree -p flumedb` to confirm the new version
- Rebuild and test your application to ensure compatibility
- If using a lockfile, ensure it is committed to version control
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Flumedb
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,096.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-45684 — 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-2021-45684 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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