CVE-2018-13623
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 · uneditedThe mintToken function of a smart contract implementation for AirdropperCryptics, an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to any value.
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 confidenceInteger overflow vulnerability in the mintToken function of the AirdropperCryptics Ethereum token smart contract allows the contract owner to set arbitrary user balances due to lack of proper arithmetic overflow/underflow checks.
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 dataall versionsCVSS 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:3.0/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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Identify if AirdropperCryptics contract is deployedSearch your blockchain nodes or contract registries for contracts named 'AirdropperCryptics' or 'Cryptics' with the airdrop functionality. Check contract addresses in your deployment records or block explorers.Affected if A deployed contract matching the AirdropperCryptics token is found in your environment
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Locate the mintToken functionIf the contract is identified, retrieve its source code or decompiled bytecode. Search for a function named 'mintToken' within the contract.Affected if A function named 'mintToken' exists in the deployed contract
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Check for SafeMath usage in mintTokenExamine the mintToken function code. Look for SafeMath library imports (using SafeMath for uint256) or explicit require statements that validate arithmetic operations (e.g., require(balance + amount > balance) or require(newBalance >= oldBalance)).Affected if The function performs arithmetic on balances without SafeMath library or explicit overflow/underflow checks
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Verify owner privilege in mintTokenReview the mintToken function signature and access control. Determine if the function can be called only by the contract owner and if it allows setting arbitrary balance values without additional constraints.Affected if The function permits the owner to modify any user's balance to arbitrary values without logging or additional authorization
Your environment is affected if you have deployed the AirdropperCryptics smart contract and its mintToken function lacks SafeMath or explicit overflow checks, allowing the owner to set arbitrary balances.
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 SafeMath library or explicit overflow checks in the mintToken function to prevent integer overflows, and review owner privileges to ensure balance modifications follow proper authorization logic.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-13623 — 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-2018-13623 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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- Version or environment caveats, and links to real fixes
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