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Stormshield Network SecurityApplication · Stormshield

CVE-2023-41166

MEDIUM · 5.3 CVSS v3.1 Published 2023-12-21
Fix available
A fix is available. Upgrade to 4.3.23 / 4.6.10 or later.
See remediation →
62/100
Remediation priority · Elevated
Remotely reachable No privileges 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
An issue was discovered in Stormshield Network Security (SNS) 3.7.0 through 3.7.39, 3.11.0 through 3.11.27, 4.3.0 through 4.3.22, 4.6.0 through 4.6.9, and 4.7.0 through 4.7.1. It's possible to know if a specific user account exists on the SNS firewall by using remote access commands.

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

This is an information disclosure vulnerability in Stormshield Network Security (SNS) firewalls across multiple version ranges (3.7.0-3.7.39, 3.11.0-3.11.27, 4.3.0-4.3.22, 4.6.0-4.6.9, 4.7.0-4.7.1). An unauthenticated remote attacker can determine whether specific user accounts exist on the firewall by sending certain remote access commands. This user enumeration capability aids in targeted credential-based attacks.

MitigationApply the vendor-supplied patch/upgrade to a fixed SNS version. As an interim control, restrict network access to the firewall's management interfaces to trusted IP addresses only.

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
Stormshield Network SecurityApplication
Affected:>= 3.7.0, <= 3.7.39>= 3.11.0, <= 3.11.27>= 4.3.0, < 4.3.23>= 4.6.0, < 4.6.10>= 4.7.0, < 4.7.2

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
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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. Determine SNS firmware version
    Access the firewall CLI and run 'version' or check via the web administration interface under System > Status or Dashboard
    Affected if The installed version falls within 3.7.0-3.7.39, 3.11.0-3.11.27, 4.3.0-4.3.22, 4.6.0-4.6.9, or 4.7.0-4.7.1
  2. Verify remote administration interface accessibility
    Confirm whether the firewall's admin web interface (port 443) or CLI over SSH is exposed to untrusted networks
    Affected if Remote management interfaces are reachable from networks outside your trusted administrative zone
  3. Check remote access authentication settings
    Review the firewall's remote access configuration via the admin panel under Configuration > Users > Remote access or via CLI show commands for remote auth settings
    Affected if Remote user authentication is enabled and allows connections from unauthenticated or untrusted sources
  4. Audit enabled user accounts
    List local user accounts configured on the firewall via Users > Local users or CLI command 'user list'
    Affected if Any local user accounts exist on the firewall, as the vulnerability allows enumeration of these accounts

You are affected if your SNS version is within the affected ranges AND the remote administration interface is accessible from untrusted networks, allowing an unauthenticated attacker to enumerate valid user accounts.

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.

dbcve · scoped
Upgrade available Upgrade to 4.3.23 / 4.6.10 / 4.7.2 or later
Fixed in 4.3.234.6.104.7.2
Interim mitigation

Apply the vendor-supplied patch/upgrade to a fixed SNS version. As an interim control, restrict network access to the firewall's management interfaces to trusted IP addresses only.

Recommended fix High confidence

Upgrade to the fixed release for your version branch: 3.7.40, 3.11.28, 4.3.23, 4.6.10, or the latest stable 4.7.x release

  1. 1. Identify the current SNS version by checking the firewall administration interface or running 'CLI version' command
  2. 2. Determine which version branch (3.7.x, 3.11.x, 4.3.x, 4.6.x, or 4.7.x) is currently in use
  3. 3. For branch 3.7.x: Plan upgrade to version 3.7.40 or later
  4. 4. For branch 3.11.x: Plan upgrade to version 3.11.28 or later
  5. 5. For branch 4.3.x: Plan upgrade to version 4.3.23 or later
  6. 6. For branch 4.6.x: Plan upgrade to version 4.6.10 or later
  7. 7. For branch 4.7.x: Plan upgrade to version 4.7.2 or later (if available) or next stable 4.7.x release
  8. 8. Before upgrading, review Stormshield release notes for any migration requirements
Caveat Review release notes for any configuration or feature changes between versions; minor version upgrades typically have minimal breaking changes

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Stormshield Network Security 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
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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-2023-41166 in production — separate from our analysis above.

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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