CVE-2020-25172
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 · uneditedA relative path traversal attack in the B. Braun OnlineSuite Version AP 3.0 and earlier allows unauthenticated attackers to upload or download arbitrary files.
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 confidenceA relative path traversal vulnerability in B. Braun OnlineSuite AP 3.0 and earlier allows unauthenticated attackers to bypass directory restrictions using '..' sequences in file paths, enabling arbitrary file upload and download. This critical flaw can lead to remote code execution, data exfiltration, or system compromise.
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<= 3.0CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 installed B. Braun OnlineSuite versionLocate the application installation directory or check system registry for the OnlineSuite version information. Typical locations include program files directories or the application's 'About' or 'Version' menu if accessible through a web interface.Affected if The version displayed is 3.0 or any version number lower than 3.0 (e.g., 2.x, 1.x).
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Verify if unauthenticated file operations are accessibleAttempt to access the application's file upload or download endpoints without providing credentials. Check if URLs such as /fileupload, /download, /files, or similar paths are reachable without a login prompt.Affected if File operation endpoints respond without requiring authentication, indicating the vulnerable condition is present.
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Test for path traversal vulnerabilitySend HTTP requests to file operation endpoints using path traversal sequences like ../ or ..\ in the file path parameter. For example, request a download for a file outside the intended directory using patterns such as ?file=../../config.ini or ?path=../../../Affected if The application returns files from directories outside the intended restricted folder, confirming the path traversal flaw is exploitable.
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Confirm directory restriction bypassCompare the file access behavior when using normal paths versus paths containing '..' sequences. Check if files outside the web root or application sandbox can be accessed.Affected if Using '..' sequences successfully navigates beyond the intended directory restriction, allowing access to system files or application configuration files.
A system is affected if B. Braun OnlineSuite AP version 3.0 or earlier is installed AND the application exposes file operation features without authentication enforcement, allowing path traversal sequences to bypass directory restrictions.
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 dataImplement authentication enforcement for all file operations and sanitize path inputs to block traversal sequences; apply vendor-provided patches or upgrade to a patched version; restrict file system permissions to limit access scope.
- Consultation8.0 h
- Implementation12.0 h
- Testing16.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,160.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25172 — 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-2020-25172 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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