CVE-2024-53379
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 · uneditedHeap buffer overflow in the server site handshake implementation in Real Time Logic LLC's SharkSSL version (from 05/05/24) commit 64808a5e12c83b38f85c943dee0112e428dc2a43 allows a remote attacker to trigger a Denial-of-Service via a malformed Client-Hello message.
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 confidenceA heap buffer overflow vulnerability exists in SharkSSL's server site handshake implementation. The flaw is triggered when processing a malformed Client-Hello message during the TLS/SSL handshake, causing the server to write beyond allocated heap memory boundaries and resulting in denial of service.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 SharkSSL installationSearch for SharkSSL libraries, headers, or components in your system. Common locations include /usr/lib/, /opt/, or embedded firmware images. Look for files named libsharkssl.* or sharkssl-related binaries.Affected if SharkSSL is present in the environment
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Verify TLS server mode is enabledReview your application code or configuration to determine if the SharkSSL TLS server mode is active. Check for initialization of SharkSSL as a server (e.g., SOCKET_SSL_SERVER flag or equivalent API call).Affected if SharkSSL is configured as a TLS server accepting client connections
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Determine SharkSSL versionInspect the SharkSSL library binary or header files for version information. Run 'strings' on the library or check version constants in included headers. Compare against any available SharkSSL release notes.Affected if The installed version cannot be confirmed as patched or is an older release
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Check for exposed TLS endpointsIdentify network services using SharkSSL for TLS. Use 'netstat' or 'ss' to list listening ports with TLS/SSL. Review application logs for SharkSSL handshake activity.Affected if SharkSSL TLS server endpoints are exposed and reachable on the network
You are affected if SharkSSL is deployed with TLS server functionality enabled and the version is older than any available patched release.
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 dataImplement proper bounds checking and input validation on Client-Hello message fields before copying data to heap buffers. Consider updating to any patched version of SharkSSL if available from the vendor.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-53379 — 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-2024-53379 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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