CVE-2000-0582
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 · uneditedCheck Point FireWall-1 4.0 and 4.1 allows remote attackers to cause a denial of service by sending a stream of invalid commands (such as binary zeros) to the SMTP Security Server proxy.
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 confidenceCheck Point FireWall-1 versions 4.0 and 4.1 contain a vulnerability in the SMTP Security Server proxy where sending a stream of invalid SMTP commands (such as binary zeros) causes the proxy service to crash, resulting in denial of service.
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= 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
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/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 Check Point Firewall-1 versionRun the command 'fw ver' or 'cpinfo' on the Firewall-1 management server or gateway to retrieve the exact version numberAffected if The version displayed is 4.0 or 4.1 specifically
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Confirm the SMTP Security Server proxy is enabledInspect the FireWall-1 policy objects and look for SMTP proxy or Security Server definitions in the objects_5_0.C file (or equivalent database file for version 4.x)Affected if An SMTP Security Server proxy object exists and is defined in the active security policy
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Verify SMTP proxy service bindingReview the FireWall-1 policy installation details and check which services are bound to the Security Server module using 'fw stat' or examining the policy rulesAffected if The SMTP service is bound to the Security Server (as opposed to being passed through directly)
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Check for active SMTP proxy connectionsUse 'fw tab -t connections' or review active connections through the Security Server to see if SMTP proxy is currently handling trafficAffected if The system is actively processing SMTP traffic through the proxy service
The environment is affected if Check Point Firewall-1 version 4.0 or 4.1 is running with the SMTP Security Server proxy enabled and processing SMTP connections.
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 security Gateway. If immediate upgrade is not feasible, disable or heavily restrict access to the SMTP Security Server proxy through network filtering rules.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2000-0582 — 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-2000-0582 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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