CVE-2017-2165
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 · uneditedGroupSession versions 4.6.4 and earlier allows remote authenticated attackers to bypass access restrictions to obtain sensitive information such as emails via unspecified vectors.
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 confidenceGroupSession versions 4.6.4 and earlier contains an access control bypass vulnerability where authenticated users can access sensitive information (such as emails) belonging to other users via unspecified vectors. This is an authorization failure allowing privilege escalation within 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<= 4.6.4CVSS 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:3.0/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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Identify installed GroupSession versionCheck the version displayed in the GroupSession login page footer, or check the war file/version manifest in the application installation directory (typically found in gsenv.war or version.properties)Affected if Version is 4.6.4 or earlier (the version number is displayed on the login page or in version files)
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Verify GroupSession web application is accessibleConfirm the GroupSession web interface is reachable via HTTP/HTTPS at the configured URL (commonly /gsession or /)Affected if The application is deployed and accessible - the vulnerability requires an authenticated user session to exploit
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Check for existing user accounts with access to other users dataReview user management panel to confirm multiple users exist in the system - the vulnerability allows one authenticated user to access another users sensitive data (emails)Affected if Multiple user accounts are created and the application is in production use with sensitive data stored
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Review access logs for anomalous data retrieval patternsExamine GroupSession server logs (typically in logs/ under the installation directory) for requests accessing user mail data or personal information that do not match the requesting users IDAffected if Logs show data access patterns where user A accessed user B's mail or personal information without proper authorization
You are affected if GroupSession version 4.6.4 or earlier is installed and the application is accessible to multiple authenticated users who can potentially access each other's sensitive data.
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 dataUpgrade GroupSession to version 4.6.5 or later. If immediate patching is not possible, implement additional access control validation on data retrieval operations and monitor for unauthorized access patterns.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-2165 — 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-2017-2165 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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