CVE-2019-5032
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 exploitable out-of-bounds read vulnerability exists in the LabelSst record parser of Aspose Aspose.Cells 19.1.0 library. A specially crafted XLS file can cause an out-of-bounds read, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the vulnerability.
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 confidenceAn out-of-bounds read vulnerability exists in the LabelSst record parser of the Aspen.Aspose.Cells 19.1.0 library when processing specially crafted XLS files. The parser fails to properly validate bounds when reading label data from the shared string table (SST), allowing memory to be read beyond allocated buffers. This can be triggered by tricking a user into opening a malicious XLS file, potentially leading to remote 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= 19.1.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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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Identify the installed version of the libraryCheck your project dependencies or the installed DLL version for 'Aspose.Cells' - examine the assembly metadata or NuGet package reference to confirm the exact version numberAffected if The installed version is 19.1.0 exactly, as this is the only version listed as affected by this CVE
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Confirm the library processes XLS filesReview your application code to determine if it uses the library to open, parse, or render .xls file formats - look for calls to workbook.Open() or similar methods with XLS file pathsAffected if Your application loads XLS files using the vulnerable library, as the flaw is in the LabelSst record parser specific to XLS format processing
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Verify the LabelSst record parsing is invokedWhen opening an XLS file, the library internally parses the Shared String Table (SST) which contains LabelSst records - this occurs automatically during file loading if the XLS contains label data in the SSTAffected if The XLS file being processed contains label data in the Shared String Table (SST), triggering the vulnerable parsing code path
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Check application-layer file validationDetermine whether your application performs any pre-processing validation on XLS files before passing them to the library (such as file format魔术检查或 schema validation)Affected if No additional file validation is performed and untrusted XLS files are loaded directly, allowing the specially crafted file to reach the vulnerable parser
You are affected if you are using exactly version 19.1.0 of the library and your application uses it to process XLS files containing SST label data from untrusted sources.
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 dataUpdate Aspen.Aspose.Cells to the latest version containing the vendor patch for this vulnerability. Until patched, avoid opening untrusted XLS files with the affected library and implement additional file validation at the application layer.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-5032 — 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-2019-5032 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
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- Version or environment caveats, and links to real fixes
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