CVE-2012-4670
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 · uneditedTigase XMPP Server before 5.1.0 does not verify that a request was made for an XMPP Server Dialback response, which allows remote XMPP servers to spoof domains via a (1) Verify Response or (2) Authorization Response.
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 confidenceTigase XMPP Server before 5.1.0 fails to validate that an XMPP Server Dialback request was actually initiated before processing Verify Response or Authorization Response messages. This allows remote malicious XMPP servers to spoof domains by sending unsolicited dialback responses, bypassing the intended domain verification mechanism.
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<= 5.1.0CVSS 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
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:P/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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Determine installed Tigase XMPP Server versionRun the command to check the Tigase server version (typically via version command in admin console, or inspect server startup logs, or check the JAR file metadata)Affected if The installed version is 5.1.0 or any version lower than 5.1.0
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Verify Server Dialback component is enabledCheck the Tigase configuration files (such as init.properties or config.tdsl) for the 'server-dialback' or 'dialback' component settingsAffected if Server Dialback is enabled in the configuration, making the server vulnerable to unsolicited dialback response processing
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Inspect XMPP server logs for suspicious dialback activityReview server logs for Verify Response or Authorization Response messages that arrive without a corresponding preceding dialback request from the same remote domainAffected if Logs show Verify Response or Authorization Response messages processed without an associated originating dialback request, indicating the vulnerability may have been exploited
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Check for unknown or unauthorized remote domains in dialback connectionsExamine connection logs and dialback verification records for connections from remote XMPP servers that were not explicitly initiated by your serverAffected if Unsolicited dialback responses from unknown or unauthorized remote domains appear in logs or connection records
The environment is affected if Tigase XMPP Server version 5.1.0 or lower is running with Server Dialback enabled.
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 Tigase XMPP Server to version 5.1.0 or later, which includes proper validation of dialback request-response pairing.
- Consultation3.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-4670 — 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-2012-4670 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