CVE-2008-2391
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 · uneditedSubSonic allows remote attackers to bypass pagesize limits and cause a denial of service (CPU consumption) via a pageindex (aka data page number) of -1.
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 confidenceSubSonic contains an input validation vulnerability where the pageindex parameter accepts negative values (-1), allowing attackers to bypass configured pagesize limits. This results in excessive database query loads causing CPU consumption and 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 dataall versionsCVSS 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
- Complete
AV:N/AC:L/Au:N/C:N/I:N/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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Locate SubSonic assemblies in the applicationSearch the application binaries directory for SubSonic.dll, Subsonic.dll, or SubSonic.Core.dll. Also search for references to SubSonic in the codebase (using statements, imports, or DLL references).Affected if Any SubSonic DLL is present in the application bin folder or referenced in the project
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Identify usage of SubSonic pagination featuresSearch source code for usage of SubSonic's query or data access classes that accept pagination parameters, such as PagedList, Skip, Take, or where a pageindex parameter is passed to SubSonic query methods.Affected if Code passes a pageindex parameter to SubSonic data access methods without server-side validation
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Review application code for pageindex parameter handlingSearch for web forms, handlers, or controllers that accept a pageindex or pageIndex query string or form parameter and pass it to SubSonic queries.Affected if The application accepts pageindex from user input and uses it directly in SubSonic queries without validation
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Check for input validation on pagination parametersInspect the code paths identified in step 3 to verify whether pageindex is validated to be a non-negative integer before being used in database queries.Affected if No validation exists to reject negative values like -1 before the pageindex is passed to SubSonic
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Monitor server logs for negative pageindex valuesSearch IIS logs, application logs, or W3C logs for requests containing pageindex=-1 or similar negative values in query strings.Affected if Log evidence shows requests with negative pageindex values reaching the server
If SubSonic is present and the application accepts pageindex from users without rejecting negative values, the environment is vulnerable to this input validation flaw.
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 negative or invalid pageindex values, and enforce configured pagesize limits server-side regardless of client-supplied values.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 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 $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2008-2391 — 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-2008-2391 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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