CVE-2013-6953
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 · uneditedBlogEngine.NET 2.8.0.0 and earlier allows remote attackers to read usernames and password hashes via a request for the sioc.axd file.
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 confidenceBlogEngine.NET versions 2.8.0.0 and earlier contain an information disclosure vulnerability in the sioc.axd handler. Remote unauthenticated attackers can request this file to obtain plaintext usernames and password hashes of registered users, enabling credential compromise.
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<= 2.8= 1.4.5= 1.5= 1.6= 2.0= 2.5= 2.6= 2.7CVSS 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
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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.
-
Identify installed BlogEngine.NET versionCheck the version.xml file in the App_Data folder, or examine the BlogEngine.Core.dll assembly version properties, or look at the version displayed in the admin dashboard under 'About'Affected if The installed version is 1.4.5, 1.5, 1.6, 2.0, 2.5, 2.6, 2.7, or any version up to and including 2.8.0.0
-
Verify sioc.axd handler exists in the applicationCheck for the presence of the sioc.axd file in the website root directory, or look for a mapping to sioc.axd in the IIS handler mappings or the web.config <handlers> sectionAffected if The sioc.axd file exists and is mapped as a handler in the application
-
Test unauthenticated access to sioc.axdUsing a web browser or curl tool, navigate to http://yourdomain.com/sioc.axd (or /api/sioc) without providing any authentication credentials and observe if user data is returnedAffected if The handler responds with HTTP 200 and returns user information including usernames and password hashes without requiring login
-
Check web.config handler authorization settingsExamine the web.config file in the root directory for the <location path="sioc.axd"> section and verify whether <allow users="*"> or missing authorization restrictions are configured, allowing anonymous accessAffected if The web.config either lacks an authorization restriction for sioc.axd or explicitly allows anonymous users (*) access to this handler
A user is affected if they are running BlogEngine.NET version 2.8.0.0 or earlier AND the sioc.axd handler is present and accessible without authentication, as this combination allows attackers to retrieve user credentials.
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 BlogEngine.NET to a version beyond 2.8.0.0 that contains the security patch, or if immediate upgrade is not feasible, disable or restrict access to the sioc.axd handler via web.config IIS configuration to prevent unauthenticated access.
- Consultation2.0 h
- Implementation4.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-6953 — 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-2013-6953 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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