Enterprise Nfv Infrastructure SoftwareApplication · Cisco
CVE-2019-1893
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 Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system (OS) of an affected device as root. The vulnerability is due to insufficient input validation of a configuration file that is accessible to a local shell user. An attacker could exploit this vulnerability by including malicious input during the execution of this file. A successful exploit could allow the attacker to execute arbitrary commands on the underlying OS as root.
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 confidenceThis is a local privilege escalation vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS). An authenticated local attacker with shell access can inject malicious commands through a configuration file that lacks proper input validation, allowing execution of arbitrary commands as root on the underlying operating system.
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
= 3.9.1CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify if NFVIS is installedCheck for the presence of Cisco Enterprise NFV Infrastructure Software on the system. Look for NFVIS processes running or check system inventory for the product.Affected if NFVIS is not present on the system, the vulnerability does not apply.
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Determine the NFVIS versionRun the command to display the NFVIS version, typically via CLI command such as 'show version' or check the installed package version on the system.Affected if The installed version is exactly 3.9.1. Versions other than 3.9.1 are not affected by this specific CVE.
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Verify shell access is enabledCheck if shell or bash access is available to local users on the NFVIS system. Review user access configurations and whether the CLI permits shell escape or direct OS access.Affected if Shell access is required for exploitation. If local shell access is disabled or restricted, the attack vector is not available.
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Inspect configuration file permissionsExamine the configuration files used by NFVIS for proper file permissions. Verify who can write to or modify these files, particularly files loaded through the NFVIS configuration interface.Affected if If low-privileged users can modify configuration files that NFVIS processes, the injection point exists.
A system is affected only if it runs NFVIS version 3.9.1 and permits local authenticated shell access with configurable files that can be modified by the attacker.
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 dataApply the relevant Cisco security patch for NFVIS when available. In the interim, strictly limit local shell access and restrict permissions on configuration files to prevent unauthorized modification by low-privileged users.
Fix this in Enterprise Nfv Infrastructure Software
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1893 — 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-2019-1893 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
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