CVE-2000-0808
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 · uneditedThe seed generation mechanism in the inter-module S/Key authentication mechanism in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to bypass authentication via a brute force attack, aka "One-time (s/key) Password Authentication."
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 · moderate confidenceThe seed generation mechanism in Check Point VPN-1/FireWall-1's S/Key one-time password authentication has a flaw that allows remote attackers to bypass authentication through brute force attacks. The vulnerability exists in the inter-module S/Key authentication mechanism in versions 4.1 and earlier.
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= 3.0= 4.0= 4.1CVSS 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
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 the installed productConfirm that the system has Check Point VPN-1/FireWall-1 (or Checkpoint Firewall-1) installed. Check for the presence of Check Point software components or consult system inventory records.Affected if The product is not Check Point VPN-1/FireWall-1 or Checkpoint Firewall-1.
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Determine the installed versionRetrieve the exact version number of the Check Point Firewall-1 installation. This can be done through the Check Point management interface, command-line tools, or by examining version information in the installation directory.Affected if The installed version is 3.0, 4.0, or 4.1.
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Verify if S/Key authentication is enabledCheck the authentication configuration settings for the Firewall-1 policy. Determine whether S/Key one-time password authentication is configured as an active authentication method for any firewall modules or rules.Affected if S/Key authentication is enabled and the version is 3.0, 4.0, or 4.1.
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Review inter-module authentication settingsExamine the authentication mechanisms used for communication between Firewall-1 modules (such as management server and enforcement points). Look for configurations that involve S/Key for inter-module communication.Affected if S/Key is used for inter-module authentication and the version falls within the affected range.
A system is affected if it runs Check Point Firewall-1 version 3.0, 4.0, or 4.1 with S/Key one-time password authentication enabled.
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 dataUpgrade to a supported version of Check Point VPN-1/FireWall-1 that includes the patched S/Key authentication mechanism, as no direct patch is available for these legacy versions.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2000-0808 — 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-2000-0808 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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- 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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