CVE-2017-9302
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 · uneditedRealPlayer 16.0.2.32 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted mp4 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 confidenceRealPlayer 16.0.2.32 contains a divide-by-zero vulnerability in its MP4 file parser. When processing a specially crafted MP4 file with a zero-valued divisor in a mathematical operation, the application crashes, causing a denial of service.
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= 16.0.2.32CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:L/AC:L/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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Verify RealPlayer installationCheck if RealPlayer is installed on the system by looking for the executable (typically in Program Files/RealPlayer or via registry keys under HKLM\SOFTWARE\RealNetworks or HKCU\SOFTWARE\RealNetworks)Affected if RealPlayer software is found on the system
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Confirm installed versionLocate the RealPlayer executable and check its version properties, or query the application via Help > About RealPlayer, or check the registry value for the installed version under the RealNetworks registry keysAffected if The installed version is exactly 16.0.2.32
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Determine MP4 handling capabilityCheck if the MP4 parsing module is present and functional by attempting to identify the file handlers associated with RealPlayer (check file associations for .mp4 files or examine the RealPlayer codecs/plugins directory)Affected if RealPlayer is configured to handle or process MP4 files
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Assess MP4 file processing usageReview recent file access logs, check recent documents opened by RealPlayer, or monitor for active MP4 parsing functionality in the applicationAffected if RealPlayer has been used to process MP4 files or is configured as the default handler for MP4 content
A system is affected if RealPlayer version 16.0.2.32 is installed and the MP4 file parsing capability is present or enabled, as the divide-by-zero vulnerability will trigger when processing a specially crafted MP4 file.
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 dataDo not open untrusted or unverified MP4 files in RealPlayer. If available, update to a newer version that addresses this vulnerability. Consider using alternative media players for untrusted content.
- Consultation3.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,992.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-9302 — 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-2017-9302 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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