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Enterprise Nfv Infrastructure SoftwareApplication · Cisco

CVE-2018-0279

HIGH · 8.8 CVSS v3.1 Published 2018-05-17
Fix available
A fix is available. Upgrade to 3.6.3 or later.
See remediation →
94/100
Remediation priority · Urgent
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 Secure Copy Protocol (SCP) server of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to access the shell of the underlying Linux operating system on the affected device. The vulnerability is due to improper input validation of command arguments. An attacker could exploit this vulnerability by using crafted arguments when opening a connection to the affected device. An exploit could allow the attacker to gain shell access with a non-root user account to the underlying Linux operating system on the affected device. Due to the system design, access to the Linux shell could allow execution of additional attacks that may have a significant impact on the affected system. This vulnerability affects Cisco devices that are running release 3.7.1, 3.6.3, or earlier releases of Cisco Enterprise NFV Infrastructure Software (NFVIS) when access to the SCP server is allowed on the affected device. Cisco NFVIS Releases 3.5.x and 3.6.x do allow access to the SCP server by default, while Cisco NFVIS Release 3.7.1 does not. Cisco Bug IDs: CSCvh25026.

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 confidence

A vulnerability in the SCP server of Cisco Enterprise NFV Infrastructure Software (NFVIS) allows authenticated remote attackers to gain shell access to the underlying Linux OS by sending crafted arguments during SCP connection. The flaw is due to improper input validation of command arguments, affecting versions 3.7.1, 3.6.3, and earlier.

MitigationDisable SCP server access if not required (default in 3.5.x/3.6.x). For affected versions, upgrade to a Cisco patched release. Restrict SCP access to trusted management networks.

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
Enterprise Nfv Infrastructure SoftwareApplication
Affected:< 3.6.3= 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
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 checks

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

  1. Identify the Cisco NFVIS installation
    Access the device CLI and run 'show version' or check system information to confirm the product is Cisco Enterprise NFV Infrastructure Software
    Affected if The system is not running Cisco Enterprise NFVIS
  2. Check the installed NFVIS version
    Run 'show version' in the NFVIS CLI to retrieve the software version number
    Affected if Version is less than 3.6.3 or equal to 3.7.1
  3. Determine if the SCP server is accessible
    Check the NFVIS configuration for SCP server settings, or attempt an SCP connection to the device from an authorized management station
    Affected if SCP server is enabled and accepting connections

The system is affected if it is running Cisco NFVIS version 3.7.1 or any version earlier than 3.6.3 AND the SCP server feature is enabled on the device.

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
Upgrade available Upgrade to 3.6.3 or later
Fixed in 3.6.3
Interim mitigation

Disable SCP server access if not required (default in 3.5.x/3.6.x). For affected versions, upgrade to a Cisco patched release. Restrict SCP access to trusted management networks.

Fix this in Enterprise Nfv Infrastructure Software Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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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-2018-0279 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
  • 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