CVE-2017-17409
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 · uneditedThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Bitdefender Internet Security 2018. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within emulator 0x10A in cevakrnl.xmd. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code under the context of SYSTEM. Was ZDI-CAN-5102.
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 Bitdefender Internet Security 2018's emulator (cevakrnl.xmd, function 0x10A) due to lack of proper validation of user-supplied data. The overflow occurs before a memory write operation, allowing an attacker to execute arbitrary code with SYSTEM privileges by tricking the user into visiting a malicious webpage or opening a malicious 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< 73456CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/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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Verify Bitdefender Internet Security 2018 is installedOpen the Bitdefender interface and navigate to the About or Support section, or check the installed programs list in Windows Control Panel to confirm the exact product name and versionAffected if The product is not Bitdefender Internet Security 2018 (this CVE only affects that specific product)
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Check the installed build numberIn the Bitdefender interface, go to About or Support to view the build/version number. The version format typically shows as a build number such as 73456Affected if The build number is less than 73456 (versions before this build are affected)
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Confirm the emulator component is activeIn Bitdefender settings, verify that the scanning/emulation feature (which uses cevakrnl.xmd) is enabled. This is typically found under Protection settings or Advanced Threat settingsAffected if The emulator feature is enabled - this is required for the vulnerability to be triggerable through malicious files or webpages
A user is affected if they have Bitdefender Internet Security 2018 with a build number below 73456 and have the emulator/scanning feature enabled, as the integer overflow in cevakrnl.xmd function 0x10A can be triggered during emulation of malicious content.
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 data73456
Apply the vendor-supplied Bitdefender security update to remediate this vulnerability. Until patched, users should avoid visiting untrusted websites or opening untrusted files to reduce exploitation risk.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-17409 — 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-2017-17409 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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