dbcve.org
Self Service ApplicationApplication · Hcltech

CVE-2019-4301

HIGH · 8.4 CVSS v3.1 Published 2020-02-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
88/100
Remediation priority · High
Remotely reachable

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
BigFix Self-Service Application (SSA) is vulnerable to arbitrary code execution if Javascript code is included in Running Message or Post Message HTML.

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

BigFix Self-Service Application (SSA) contains a cross-site scripting (XSS) vulnerability allowing arbitrary JavaScript code execution. The flaw exists in how the application handles user-supplied input in the Running Message and Post Message HTML fields, which are rendered without proper sanitization or encoding.

MitigationImplement output encoding when rendering Running Message and Post Message HTML fields, and add Content Security Policy (CSP) headers to prevent inline script execution. All user input in these fields should be treated as untrusted and sanitized server-side before rendering.

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
Self Service ApplicationApplication
Affected:= 3.0.0

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
High
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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. Verify BigFix Self-Service Application is installed
    Check the installed applications or program files for 'Self Service Application' or 'BigFix SSA'. Look in Windows Programs and Features, or check the installation directory (typically under C:\Program Files\HCL\ or C:\Program Files\BigFix\).
    Affected if The application is present on the system
  2. Confirm the installed version is 3.0.0
    Check the application version. Right-click the SSA executable (often named SSA.exe or similar) and select Properties > Details to view the File Version. Alternatively, check the Windows registry under HKEY_LOCAL_MACHINE\SOFTWARE\HCL\SelfServiceApplication or look in the application's About/Help section.
    Affected if The version listed is exactly 3.0.0
  3. Identify if Running Message HTML field is configured
    Access the SSA administrative console or configuration panel. Navigate to the message configuration section where 'Running Message' can be set. This is typically found in the SSA management interface under Message Settings or similar.
    Affected if The Running Message field contains any HTML content or custom text
  4. Identify if Post Message HTML field is configured
    Access the SSA administrative console. Look for 'Post Message' or 'Post-Login Message' configuration under the message settings area. This field allows HTML input for display after user actions.
    Affected if The Post Message field contains any HTML content or custom text
  5. Inspect the message content for unsanitized input
    Review the values stored in the Running Message and Post Message fields. Check the underlying configuration files or database where these messages are stored for any HTML tags, script elements, or JavaScript event handlers (such as <script>, onload, onerror, javascript:).
    Affected if The message fields contain raw HTML, script tags, or JavaScript event handlers without encoding

A system is affected only if Hcltech Self Service Application version 3.0.0 is installed AND the Running Message or Post Message HTML fields contain unsanitized HTML or script content.

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

Implement output encoding when rendering Running Message and Post Message HTML fields, and add Content Security Policy (CSP) headers to prevent inline script execution. All user input in these fields should be treated as untrusted and sanitized server-side before rendering.

Fix this in Self Service Application Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2019-4301 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2019-4301 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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