CVE-2014-8627
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 · uneditedPolarSSL 1.3.8 does not properly negotiate the signature algorithm to use, which allows remote attackers to conduct downgrade attacks via unspecified vectors.
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 confidencePolarSSL 1.3.8 contains a flaw in its TLS implementation where it fails to properly negotiate the signature algorithm with connecting clients/servers. This allows remote attackers to conduct downgrade attacks by forcing the use of weaker signature algorithms during the TLS handshake, potentially enabling further cryptographic attacks.
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= 1.3.8CVSS 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- Partial
- Availability
- None
AV:N/AC:L/Au:N/C:N/I:P/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 installed PolarSSL versionQuery the library or application for its PolarSSL version string (common methods: library function call, binary metadata, package manager query, or application version output)Affected if The version is exactly 1.3.8
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Confirm TLS functionality is in useInspect the application or service configuration to determine whether TLS/SSL connections are enabled and actively used (check configuration files, running services, or application logs)Affected if TLS is enabled and the application uses PolarSSL for TLS operations
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Verify signature algorithm negotiationCapture and inspect a TLS handshake (via network capture or debug logs) to observe which signature algorithms are proposed and negotiated between client and serverAffected if The handshake shows that weaker signature algorithms are being accepted or that no explicit restriction on signature algorithms is configured
A system is affected if it runs PolarSSL version 1.3.8 and uses it for TLS connections where signature algorithm negotiation occurs without explicit restrictions.
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 dataUpgrade PolarSSL to a patched version (later releases addressed this issue). If immediate patching is not feasible, ensure TLS configurations explicitly restrict accepted signature algorithms to strong algorithms only.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2014-8627 — 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-2014-8627 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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