CVE-2019-17321
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 · uneditedClipSoft REXPERT 1.0.0.527 and earlier version have an information disclosure issue. When requesting web page associated with session, could leak username via session file path of HTTP response data. No authentication is required.
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 confidenceClipSoft REXPERT 1.0.0.527 and earlier versions expose usernames through session file paths in HTTP responses when requesting certain web pages. An unauthenticated attacker can obtain valid usernames by observing the session file path information returned by the application.
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<= 1.0.0.527CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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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Identify ClipSoft REXPERT installationLocate the REXPERT web application by checking common installation paths, running services, or by accessing the application's web interface on typical ports (such as 80, 443, or 8080). Look for the ClipSoft REXPERT login page or any web pages served by this application.Affected if The application is found running and accessible on the network.
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Determine installed versionAccess the application's web interface or check the installation directory for version information. Look for version strings in the application binaries, configuration files, or in the HTTP headers/footer of web pages served by REXPERT.Affected if The version is 1.0.0.527 or any earlier version.
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Observe HTTP responses for session file path leakageSend HTTP GET requests to various web pages served by REXPERT (such as login, home, or other accessible endpoints) and capture the full HTTP response bodies. Inspect the responses for any file path strings that may contain usernames, such as paths containing '/users/', '/sessions/', or Windows-style paths with usernames like 'C:\Users\username\' or '/home/username/'.Affected if HTTP responses contain session file path information that reveals valid usernames.
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Test unauthenticated access to session informationWithout providing any credentials, make requests to multiple endpoints of the REXPERT web application and examine whether the responses include any session-related file paths or user directory references that should not be exposed to unauthenticated users.Affected if Unauthenticated HTTP responses reveal session file paths with usernames.
The environment is affected if ClipSoft REXPERT version 1.0.0.527 or earlier is installed and running, and HTTP responses from the web application expose session file paths containing usernames to unauthenticated users.
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 to a patched version if available; otherwise, review the web page request handling code to prevent session file path information from being included in HTTP responses.
- Consultation2.0 h
- Implementation3.0 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-2019-17321 — 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-2019-17321 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
- No spam, self-promotion, credentials, or personal data