CVE-2018-18059
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 · uneditedAn issue was discovered in Bitdefender Engines before 7.76675. A vulnerability has been discovered in the rar.xmd parser that results from a lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. Paired with other vulnerabilities, this can result in denial-of-service. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
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 buffer over-read vulnerability exists in Bitdefender's rar.xmd RAR file parser due to insufficient validation of user-supplied data. The flaw allows reading past the end of an allocated buffer, which can lead to denial-of-service when chained with other vulnerabilities. Exploitation requires user interaction—either visiting a malicious webpage or opening a malicious RAR file.
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< 7.76675CVSS 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
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/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 Bitdefender installation and engine componentLocate the Bitdefender Scan Engine installation on the system. On Windows, check Program Files/Bitdefender folders for scan engine files. On Linux, check /opt/bdscan or /opt/bitdefender folders. Look for the rar.xmd or rar/parser component.Affected if The rar.xmd RAR parser component is present and accessible on the system.
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Retrieve the installed Scan Engine versionUse the Bitdefender product interface, command-line tool (bdavman, bdscan --version), or check the engine version file in the installation directory. Common paths: /opt/bdscan/updates/bdscan.vdu or the product's About/Version dialog.Affected if A Bitdefender Scan Engine version is found that is below 7.76675.
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Verify RAR file processing is enabledConfirm that the RAR archive handling module (rar.xmd) is loaded and active. Check Bitdefender scan profiles or exclusions settings to confirm RAR files are being scanned by the engine.Affected if RAR file scanning is enabled and the engine processes RAR archives.
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Compare version against vulnerability thresholdCompare the discovered Scan Engine version number to 7.76675. Note that version format may vary (e.g., 7.76674, 7.76600, or earlier).Affected if The installed version is any release prior to 7.76675.
The environment is affected if Bitdefender Scan Engines with a version number below 7.76675 are installed and the RAR parser (rar.xmd) is active and processing RAR files.
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 data7.76675
Update Bitdefender Engines to version 7.76675 or later to receive the patched parser. Ensure automatic updates are enabled and verify the engine version across protected endpoints.
- Consultation2.0 h
- Implementation1.0 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-2018-18059 — 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-2018-18059 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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