CVE-2018-20343
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 · uneditedMultiple buffer overflow vulnerabilities have been found in Ken Silverman Build Engine 1. An attacker could craft a special map file to execute arbitrary code when the map file is loaded.
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 confidenceMultiple buffer overflow vulnerabilities exist in Ken Silverman Build Engine 1 when parsing map files. An attacker can craft a malicious map file containing specially crafted data that triggers the overflow during file loading, potentially allowing arbitrary code execution.
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= 1.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 if Advsys Build Engine is installedCheck system for presence of Advsys Build Engine software, typically by searching for executable files related to the Build Engine or checking installed programs listAffected if Advsys Build Engine version 1.0 is found on the system
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Determine the installed versionUse any available version check mechanism (--version flag, about dialog, version info in executable properties) and compare to the affected version 1.0Affected if Installed version equals 1.0 exactly
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Verify map file loading capability is accessibleCheck if the application has functionality to load or import map files, as the vulnerability triggers during map file parsingAffected if Map file loading or import feature is present and accessible to users
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Identify map file handling configurationReview application settings, configuration files, or runtime options related to map file loading and parsingAffected if Configuration allows loading of external or user-supplied map files without strict validation
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Check for map file processing in active useExamine if any map files are currently loaded or if the map parsing code path is reachable during normal operationAffected if Map files can be loaded and processed by the application
The environment is affected if Advsys Build Engine version 1.0 is installed and map file loading functionality is accessible, allowing specially crafted malicious map files to be parsed.
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 dataAvoid loading map files from untrusted sources. If a vendor patch is available, apply it. Consider implementing input validation and bounds checking in the map file parsing code.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-20343 — 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-2018-20343 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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