CVE-2000-0577
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 · uneditedNetscape Professional Services FTP Server 1.3.6 allows remote attackers to read arbitrary files via a .. (dot dot) attack.
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 confidenceNetscape Professional Services FTP Server 1.3.6 contains a path traversal vulnerability where remote attackers can use '..' (dot-dot) sequences in FTP commands to navigate outside the intended directory and read arbitrary files on the system.
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= 1.3.6CVSS 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
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 if Netscape Professional Services FTP Server is runningCheck running processes or services for 'ftpserver', 'netscape ftpserver', or similar process names. On Windows, use Task Manager or 'sc query' command. On Unix/Linux, use 'ps aux' or check /var/run for PID files.Affected if The process 'ftpserver.exe' or similar Netscape FTP server process is running
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Verify the exact version numberCheck the FTP server version by connecting to it with an FTP client and using the VERSION command, or check the application binary file properties. On Windows, right-click the executable and select Properties > Version. On Unix, use 'file' command or check installation directories for version files.Affected if The version is confirmed to be 1.3.6
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Confirm the FTP service is network-accessibleAttempt to connect to the FTP port (default 21) from a remote system using 'telnet <host> 21' or an FTP client. Check firewall rules and network exposure.Affected if Port 21 is open and accepting connections from network clients
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Test for path traversal capabilityUsing an FTP client, attempt to navigate outside the FTP root using 'cd ..' commands after authenticating. Try commands like 'CWD ..' or 'CWD /..' to traverse directories.Affected if The server allows '..' sequences and permits access to directories outside the configured FTP root
If Netscape Professional Services FTP Server version 1.3.6 is running and network-accessible, the system is vulnerable to path traversal attacks via '..' sequences in FTP commands.
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 dataImplement strict input validation to reject path traversal sequences in FTP commands, validate that all resolved paths remain within the allowed root directory, or migrate to a supported and patched FTP server solution.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2000-0577 — 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-2000-0577 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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