CVE-2011-4883
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 web server in Certec atvise webMI2ADS (aka webMI) before 2.0.2 does not properly validate values in HTTP requests, which allows remote attackers to cause a denial of service (resource consumption) via a crafted request.
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 web server component in Certec atvise webMI2ADS prior to version 2.0.2 fails to properly validate input values contained in HTTP requests, allowing remote attackers to send specially crafted requests that cause excessive resource consumption leading to 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<= 2.0.1= 1.0= 2.0CVSS 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 atvise webMI2ADS installationLocate the atvise webMI2ADS installation directory or check running services on the host. The product is typically installed as a Windows service or web application.Affected if atvise webMI2ADS is found running on the system
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Determine the installed versionCheck the version of atvise webMI2ADS by examining the application files, service properties, or accessing the web interface and looking for version information in the about or status page.Affected if The version is 1.0, 2.0, or any version 2.0.1 or earlier
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Verify the web server component is exposedConfirm that the atvise webMI2ADS web server component is accessible over the network by attempting to access the HTTP interface on the configured port (typically 80 or 8080).Affected if The web interface is accessible and responds to HTTP requests
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Confirm input validation behaviorSend a test HTTP request with specially crafted input values to the atvise webMI2ADS endpoint and observe the response behavior and resource consumption.Affected if The server accepts malformed input without proper validation and shows signs of excessive resource usage or error responses indicating validation failure
The environment is affected if atvise webMI2ADS version 1.0, 2.0, or any version 2.0.1 or earlier is installed and the web server component is exposed.
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 atvise webMI version 2.0.2 or later which includes proper HTTP request value validation. If upgrade is not immediately possible, implement input validation and rate-limiting at the web server or network perimeter to mitigate malformed request exploitation.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2011-4883 — 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-2011-4883 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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