Wireless Lan Controller FirmwareOperating system · Cisco
CVE-2017-3832
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 vulnerability in the web management interface of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a missing internal handler for the specific request. An attacker could exploit this vulnerability by accessing a specific hidden URL on the GUI web management interface. A successful exploit could allow the attacker to cause a reload of the device, resulting in a DoS condition. This vulnerability affects only the Cisco Wireless LAN Controller 8.3.102.0 release. Cisco Bug IDs: CSCvb48198.
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 confidenceA vulnerability in Cisco Wireless LAN Controller software version 8.3.102.0 allows unauthenticated remote attackers to cause denial of service by accessing a specific hidden URL on the web management interface. The vulnerability stems from a missing internal handler for the specific request, which triggers a device reload when the hidden URL is accessed.
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
Wireless Lan Controller FirmwareOperating system
= 8.3.102.0CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the installed Cisco WLC firmware versionLog into the Cisco Wireless LAN Controller via CLI and run the command 'show version' or access the web management interface and navigate to the Monitor > Controller summary page to view the firmware versionAffected if The displayed version is exactly 8.3.102.0
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Confirm the exact version numberLocate the Software Version field in the 'show version' output or web interface. Note that only version 8.3.102.0 is affected; nearby versions like 8.3.102.1 or 8.3.101.0 are not vulnerableAffected if The version string matches exactly '8.3.102.0'
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Determine if the web management interface is network-accessibleVerify whether the WLC web management interface (typically ports 80 or 443) is exposed to untrusted networks by reviewing network ACLs, firewall rules, or VLAN accessibility configurationsAffected if The web interface is reachable from untrusted or external networks
You are affected if your Cisco WLC firmware is exactly version 8.3.102.0 AND the web management interface is accessible to untrusted networks, since the vulnerability is triggered by an unauthenticated request to a hidden URL on the web interface.
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 Cisco WLC software to a version that includes the fix for Cisco Bug ID CSCvb48198. If immediate patching is not feasible, restrict access to the web management interface to trusted networks to reduce exposure from unauthenticated attackers.
Fix this in Wireless Lan Controller Firmware
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 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-2017-3832 — 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-2017-3832 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
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