CVE-2018-7083
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 · uneditedIf a process running within Aruba Instant crashes, it may leave behind a "core dump", which contains the memory contents of the process at the time it crashed. It was discovered that core dumps are stored in a way that unauthenticated users can access them through the Aruba Instant web interface. Core dumps could contain sensitive information such as keys and passwords. Workaround: Block access to the Aruba Instant web interface from all untrusted users. Resolution: Fixed in Aruba Instant 4.2.4.12, 6.5.4.11, 8.3.0.6, and 8.4.0.0
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 confidenceAruba Instant stores process core dumps (memory snapshots from crashes) in a location accessible via the web interface without authentication. Unauthenticated remote attackers can retrieve these core dumps which may contain sensitive data like encryption keys and passwords.
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>= 4.0, < 4.2.4.12>= 6.5.0, < 6.5.4.11>= 8.3.0, < 8.3.0.6< 8.4.0.1CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/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 product and versionDetermine if the device is running Aruba Instant or Siemens Scalance W1750d and note the exact firmware/software version installed. On Aruba Instant, this is typically visible in the WebUI dashboard or via 'show version' command in CLI.Affected if The installed version falls within these ranges: Aruba Instant >= 4.0 but < 4.2.4.12, >= 6.5.0 but < 6.5.4.11, >= 8.3.0 but < 8.3.0.6, or Siemens Scalance W1750d < 8.4.0.1
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Confirm web interface is accessibleVerify that the Aruba Instant or Scalance W1750d web interface (HTTPS typically on port 443) is reachable from network segments that are accessible to untrusted users or the internet. Check device network configuration for interface bindings.Affected if The web interface is exposed to untrusted network segments (not blocked by firewall or ACLs) - the vulnerability can only be exploited if the web interface is reachable without authentication from an attacker's location
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Look for core dump files in web-accessible pathsIf you have CLI or filesystem access, search for core dump files (typically named 'core' or similar patterns) in directories served by the embedded web server. The web interface serves files from a known document root that may contain crash dump subdirectories.Affected if Core dump files exist in directories that are served by the web server - their presence would indicate the vulnerability is present and potentially exploitable
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Verify web server allows unauthenticated accessAttempt to access common web server paths (such as /coredump/, /crash/, or similar paths that may contain dump files) using a browser or curl from an unauthenticated context without providing credentials.Affected if Unauthenticated access to potential dump file directories returns files rather than requiring login - this confirms the vulnerability is exploitable
You are affected if your device runs a version in the affected ranges AND the web interface is accessible to untrusted parties, allowing unauthenticated retrieval of core dump files that may contain 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 data4.2.4.126.5.4.118.3.0.6
Upgrade Aruba Instant to a fixed version (4.2.4.12, 6.5.4.11, 8.3.0.6, or 8.4.0.0). As a workaround, block all untrusted access to the Aruba Instant web interface.
- Consultation4.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-7083 — 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-2018-7083 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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