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Network Functions Virtualization InfrastructureApplication · Cisco

CVE-2018-0323

MEDIUM · 6.5 CVSS v3.0 Published 2018-05-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
A vulnerability in the web management interface of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to conduct a path traversal attack on a targeted system. The vulnerability is due to insufficient validation of web request parameters. An attacker who has access to the web management interface of the affected application could exploit this vulnerability by sending a malicious web request to the affected device. A successful exploit could allow the attacker to access sensitive information on the affected system. Cisco Bug IDs: CSCvh99631.

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 confidence

A path traversal vulnerability exists in the web management interface of Cisco Enterprise NFV Infrastructure Software (NFVIS). An authenticated, remote attacker can send malicious web requests containing directory traversal sequences (e.g., ../../../') in insufficiently validated parameters to access sensitive files outside the web root directory. The vulnerability stems from a lack of proper input sanitization on web request parameters.

MitigationApply the Cisco patch for bug ID CSCvh99631 when available. Until then, restrict web management interface access to trusted IP addresses only, implement web application firewall rules to detect and block path traversal patterns, and monitor logs for suspicious traversal attempts.

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
Network Functions Virtualization InfrastructureApplication
Affected:= 3.6.1= 3.7.1

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify if Cisco NFVIS is installed
    Check system for Cisco Enterprise NFV Infrastructure Software installation. On the host, run 'show version' or check for NFVIS-specific processes/services.
    Affected if The product Cisco Enterprise NFV Infrastructure Software (NFVIS) is present on the system
  2. Check installed NFVIS version
    Run 'show version' or access the web management interface and check the version displayed in the system information or about page.
    Affected if The installed version is exactly 3.6.1 or exactly 3.7.1
  3. Verify web management interface is enabled
    Check if the NFVIS web management interface (typically on port 443 or 80) is accessible and enabled. Run 'show http-server' or similar NFVIS CLI command to check web server status.
    Affected if The web management interface is enabled and accessible
  4. Check for suspicious traversal patterns in logs
    Review NFVIS logs for requests containing '../' or '..\' sequences, especially in parameters that might reference files. Use grep or search through web server logs if available.
    Affected if Logs contain directory traversal patterns like '../' in web request parameters
  5. Inspect network access to web interface
    Verify which IP addresses can reach the NFVIS web management interface. Check ACLs, firewall rules, or the 'show ip access-list' output for the management interface.
    Affected if The web management interface is exposed to untrusted or public IP addresses without restriction

You are affected if Cisco NFVIS version 3.6.1 or 3.7.1 is installed with the web management interface enabled and accessible, particularly from untrusted networks.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the Cisco patch for bug ID CSCvh99631 when available. Until then, restrict web management interface access to trusted IP addresses only, implement web application firewall rules to detect and block path traversal patterns, and monitor logs for suspicious traversal attempts.

Fix this in Network Functions Virtualization Infrastructure Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2018-0323 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
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  • Version or environment caveats, and links to real fixes
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