Security readout for executives and security teams
Plain-English summary
CVE-2018-1142 is an authenticated cross-site scripting issue in Tenable Appliance 4.6.1 and earlier. A logged-in attacker could manipulate offline-plugin-related URL parameters to potentially run arbitrary JavaScript in the application. Sources do not provide a CVSS score, confirmed exploitation, or detailed fix text in the supplied bundle.
Executive priority
Prioritize this as a targeted remediation item for legacy Tenable Appliance deployments, not a broad emergency. The main business concern is script execution inside a security administration interface if an authenticated user abuses the flaw.
Technical view
The vulnerability is a single XSS flaw affecting Tenable Appliance versions 4.6.1 and earlier. The described trigger is a specially crafted authenticated request involving certain URL parameters related to offline plugins. The available evidence does not specify the exact parameter, privilege level required, browser context, patch version, or compensating controls.
Likely exposure
Exposure is likely limited to organizations still running Tenable Appliance 4.6.1 or earlier, especially where authenticated appliance access is available to multiple users or reachable from broader internal networks.
Exploitation context
The supplied sources do not show active exploitation, public exploit availability, or CISA KEV listing. Exploitation requires authentication according to the CVE description, which lowers likelihood but still matters for a security-management appliance.
Researcher notes
Evidence is narrow: affected product, version range, authenticated XSS class, and offline-plugin URL-parameter context. No CVSS vector, CWE, exploit status, patch version, or root-cause detail is included in the supplied bundle.
Mitigation direction
- Identify any Tenable Appliance deployments and record exact versions.
- Check Tenable advisory TNS-2018-02 for vendor-approved upgrade or remediation guidance.
- Limit appliance access to trusted administrators and management networks.
- Review accounts with appliance access and remove unnecessary users.
- Treat exposed or shared administrative access as higher priority.
Validation and detection
- Confirm whether Tenable Appliance is present in the environment.
- Verify no instance is running version 4.6.1 or earlier.
- Review appliance access controls for unnecessary authenticated users.
- Check vendor advisory details before closing the finding.
- Document whether the appliance is internet-reachable or internal only.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-1142 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.tenable.com/security/tns-2018-02CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.