CVE-2020-1853
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 · uneditedGaussDB 200 with version of 6.5.1 have a path traversal vulnerability. Due to insufficient input path validation, an authenticated attacker can traverse directories and download files to a specific directory. Successful exploit may cause information leakage.
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 · moderate confidenceGaussDB 200 version 6.5.1 contains a path traversal vulnerability in its file download functionality due to insufficient input path validation. An authenticated attacker can manipulate path inputs to traverse directories and download arbitrary files to a specific location, leading to information disclosure.
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= 6.5.1CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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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Check GaussDB 200 versionRun the command to retrieve the GaussDB 200 version (e.g., gaussdb --version, SELECT version(), or check the product documentation for your installation method)Affected if Version returned is exactly 6.5.1
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Identify file download functionalityReview GaussDB 200 configuration files (such as postgresql.conf or GaussDB-specific config) and application code for file download endpoints or functions that allow path arguments for file retrievalAffected if A file download feature that accepts path parameters is present and enabled
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Verify authentication settingsCheck GaussDB 200 authentication configuration (pg_hba.conf or equivalent) to confirm user authentication is required for database accessAffected if The database allows authenticated users to access the file download functionality; if anonymous or weak authentication is configured, the attack surface is larger
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Inspect input validation on path parametersExamine the code or configuration handling file download requests to determine if path traversal sequences (such as ../ or absolute paths) are validated or sanitized before useAffected if No whitelist-based path validation or sanitization is implemented on path inputs for file downloads
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Test for path traversal access (if safe to do so)If you have a test environment, attempt a controlled request with a path like ../../../etc/passwd or similar to verify whether directory traversal is possibleAffected if The system returns file contents from outside the intended directory, confirming the vulnerability is exploitable
You are affected if GaussDB 200 version 6.5.1 is installed AND the file download functionality with path input is enabled without proper path validation.
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 dataApply the vendor patch or upgrade to a patched version of GaussDB 200. If immediate patching is not feasible, implement strict input validation and whitelist-based path checking on all file download operations.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-1853 — 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-2020-1853 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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