CVE-2017-2791
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 · uneditedJustSystems Ichitaro 2016 Trial contains a vulnerability that exists when trying to open a specially crafted PowerPoint file. Due to the application incorrectly handling the error case for a function's result, the application will use this result in a pointer calculation for reading file data into. Due to this, the application will read data from the file into an invalid address thus corrupting memory. Under the right conditions, this can lead to code execution under the context of the application.
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 specially crafted PowerPoint file triggers an error condition in a function within JustSystems Ichitaro 2016 Trial, but the application incorrectly uses the error result in a pointer calculation for reading file data, causing data to be written to an invalid memory address and corrupting memory, which can lead to 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= 2016CVSS 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:3.0/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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Verify Ichitaro 2016 installationCheck if JustSystems Ichitaro 2016 is installed on the system by looking for the application in the program files directory or in the installed programs list via the Windows Control Panel.Affected if Ichitaro 2016 is present on the system
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Confirm exact product versionOpen Ichitaro and navigate to the Help menu or About section to view the exact version number, or right-click the executable and check its properties for version information.Affected if The version shown is exactly 2016 (or any 2016 variant)
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Check for PowerPoint file handling capabilityDetermine whether Ichitaro has the ability to open or import PowerPoint files - this may be indicated by file association settings or available import options within the application.Affected if The application can open, import, or preview PowerPoint files (.ppt/.pptx)
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Identify recent PowerPoint file activityReview the application's recent files list, document history, or file access logs to see if PowerPoint files have been opened in Ichitaro.Affected if PowerPoint files have been opened in Ichitaro 2016
A user is affected if JustSystems Ichitaro version 2016 is installed and PowerPoint files can be opened or processed by the application.
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 specially crafted PowerPoint files in Ichitaro 2016; apply vendor patches when available; consider using alternative software for viewing PowerPoint files until the vulnerability is remediated.
- Consultation4.0 h
- Implementation2.0 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-2017-2791 — 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-2017-2791 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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