CVE-2000-0423
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 · uneditedBuffer overflow in Netwin DNEWSWEB CGI program allows remote attackers to execute arbitrary commands via long parameters such as group, cmd, and utag.
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 confidenceBuffer overflow vulnerability in Netwin DNEWSWEB CGI program allows remote attackers to execute arbitrary commands by submitting excessively long strings to the group, cmd, or utag parameters. The lack of proper input length validation on these CGI parameters enables stack-based buffer overflow leading to command execution.
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= 5.3CVSS 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
- Partial
- Availability
- None
AV:N/AC:L/Au:N/C:N/I:P/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 checksWork through these to decide whether this CVE applies to you.
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Confirm Netwin Dnews installationCheck for Netwin Dnews installation on the system by searching for dnews-related processes, services, or directories. On Windows, check Program Files for Netwin folders; on Unix-like systems, check common installation paths like /usr/local/dnews or /opt/dnews.Affected if Netwin Dnews software is found running or installed on the system
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Identify installed Dnews versionLocate and read the version information for the installed Dnews software. Check for a version file, executable metadata, or run 'dnews -v' if available from command line. Compare the discovered version against the affected version 5.3.Affected if The installed version is exactly 5.3
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Locate DNEWSWEB CGI componentSearch for the dnewsweb.exe (Windows) or dnewsweb (Unix) CGI executable in the web server's cgi-bin directory or within the Dnews installation directory.Affected if The DNEWSWEB CGI program file exists on the system
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Verify CGI is web-accessibleCheck the web server configuration to determine if the DNEWSWEB CGI is mapped and accessible via HTTP/HTTPS requests. Attempt a request to the CGI endpoint if known (commonly /cgi-bin/dnewsweb.exe or similar).Affected if The DNEWSWEB CGI is enabled and reachable through the web server
The environment is affected if Netwin Dnews version 5.3 is installed AND the DNEWSWEB CGI component is present and exposed via the web server, allowing external access to the group, cmd, or utag parameters.
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 dataApply available patches from Netwin for DNEWSWEB. If patches unavailable, disable the vulnerable CGI or implement web application firewall rules to restrict parameter lengths.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2000-0423 — 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-2000-0423 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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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.
- 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