CVE-2011-2159
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 SmarterTools SmarterStats 6.0 web server omits the Content-Type header for certain resources, which might allow remote attackers to have an unspecified impact by leveraging an interpretation conflict involving (1) Admin/Defaults/frmDefaultSiteSettings.aspx, (2) Admin/Defaults/frmServerDefaults.aspx, (3) Admin/frmReportSettings.aspx, (4) Admin/frmSite.aspx, (5) App_Themes/Default/ButtonBarIcons.xml, (6) App_Themes/Default/Skin.xml, (7) Client/frmImportSettings.aspx, (8) Client/frmSeoSettings.aspx, (9) Services/Web.config, (10) aspnet_client/system_web/4_0_30319/, (11) clientaccesspolicy.xml, (12) cloudscan.exe, (13) crossdomain.xml, or (14) sitemap.xml. NOTE: it is possible that only clients, not the SmarterStats product, could be affected by this issue.
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 confidenceSmarterStats 6.0 web server fails to send Content-Type HTTP headers for certain static and dynamic resources (including .aspx pages, XML files, and configuration files), which could allow MIME-type confusion attacks where clients misinterpret file content types.
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= 6.0CVSS 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
- 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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Confirm SmarterStats versionCheck the installed SmarterStats version through Windows Programs and Features, or access the SmarterStats admin interface and look for the version number in About/Help sectionsAffected if The installed version is 6.0 exactly (note: only version 6.0 is listed as affected)
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Test .aspx page for Content-Type headerUse a web browser developer tool, curl, or PowerShell Invoke-WebRequest to make an HTTP request to any .aspx page served by SmarterStats (such as a login page or default page). Inspect the response headers and check if a Content-Type header is presentAffected if The HTTP response lacks a Content-Type header for .aspx pages
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Test XML file for Content-Type headerRequest any XML file hosted by the SmarterStats web server (common paths may include / or subdirectories with .xml extensions). Inspect the response headers for the presence of Content-TypeAffected if The HTTP response lacks a Content-Type header for XML files
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Test configuration files for Content-Type headerRequest any configuration file served by the web server (such as .config, .json, or similar files if accessible). Inspect the response headers for the presence of Content-TypeAffected if The HTTP response lacks a Content-Type header for configuration files
You are affected if SmarterStats version 6.0 is installed AND at least one of the tested resource types (.aspx, XML, config files) returns responses without a Content-Type HTTP header.
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 dataConfigure the web server to explicitly send appropriate Content-Type headers for all served resources, or upgrade to a patched version if available.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-2159 — 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-2011-2159 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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