CVE-2014-2898
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 · uneditedwolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact via multiple calls to the CyaSSL_read function which triggers an out-of-bounds read when an error occurs, related to not checking the return code and MAC verification failure.
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 confidencewolfSSL CyaSSL before 2.9.4 contains an out-of-bounds read vulnerability in the CyaSSL_read function. When MAC verification fails or other errors occur during SSL/TLS reading, the function does not properly check return codes before continuing operation, allowing an attacker to read memory beyond allocated buffers.
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< 2.9.0CVSS 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
- 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 installed wolfSSL/CyaSSL versionCheck the library version by running 'wolfssl version' or inspecting the library binary with 'strings libwolfssl.so | grep -i version' or checking the header file version (wolfssl/version.h or cyassl/version.h)Affected if the version shown is earlier than 2.9.0 (or if the version cannot be determined but the library is known to be from before 2.9.4)
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Confirm SSL/TLS read functionality is in useReview application code or configuration to determine if CyaSSL_read or wolfSSL_read functions are called for SSL/TLS data retrievalAffected if the application uses SSL/TLS reading operations with this library
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Check for error handling around read callsInspect application source code for CyaSSL_read/wolfSSL_read function calls and verify whether return values are checked before subsequent read operationsAffected if the code does not check return codes from CyaSSL_read before continuing with additional read operations (this is the vulnerable pattern)
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Verify library build configurationCheck build configuration or compile-time settings to confirm this is a standard build of wolfSSL/CyaSSL (the vulnerability is in the library itself, not a configuration toggle)Affected if the library is a standard wolfSSL/CyaSSL build from versions before 2.9.4
You are affected if you are running any version of wolfSSL or CyaSSL earlier than 2.9.0 that uses SSL/TLS read operations without properly checking return codes from CyaSSL_read/wolfSSL_read.
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 · scoped2.9.0
Upgrade wolfSSL/CyaSSL to version 2.9.4 or later. If upgrading is not immediately feasible, implement proper error handling around CyaSSL_read calls to ensure return codes are checked before continuing read operations.
wolfSSL 2.9.4 or later (latest stable release recommended)
- 1. Identify the current wolfSSL version by checking your project dependencies or build files
- 2. Upgrade wolfSSL to version 2.9.4 or later (preferably the latest stable release)
- 3. If using a package manager (e.g., apt, yum, brew), run the appropriate update command for your system
- 4. If building from source, download the latest version from the wolfSSL repository and rebuild
- 5. Rebuild and redeploy any applications that link against wolfSSL
- 6. Verify the upgrade was successful by checking the installed version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 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 $3,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2898 — 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-2014-2898 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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