CVE-2010-0283
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 Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 before 1.7.2, and 1.8 alpha, allows remote attackers to cause a denial of service (assertion failure and daemon crash) via an invalid (1) AS-REQ or (2) TGS-REQ 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 · high confidenceThe vulnerability exists in the Key Distribution Center (KDC) of MIT Kerberos 5 versions 1.7 before 1.7.2 and 1.8 alpha. Remote attackers can send malformed AS-REQ or TGS-REQ authentication requests that trigger an assertion failure, causing the KDC daemon to crash and result in denial of service for Kerberos authentication services.
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= 5-1.8= 1.7= 1.7.1CVSS 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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Identify MIT Kerberos KDC installationLocate the KDC binary using 'which kdc' or 'which krb5kdc', or check for the presence of Kerberos KDC packages via package manager (dpkg, rpm, etc.)Affected if MIT Kerberos KDC software is not installed or is a different implementation (e.g., Heimdal, Active Directory)
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Determine the installed MIT Kerberos 5 versionRun 'kdc --version' or 'krb5-config --version', or query via package manager (e.g., 'rpm -q krb5-server' or 'dpkg -l krb5-kdc')Affected if The installed version is 1.7, 1.7.1, or any 1.8.x version (versions prior to 1.7.2 or any 1.8 release)
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Verify the KDC service is runningCheck process status via 'ps aux | grep kdc' or 'systemctl status krb5-kdc' or 'service krb5-kdc status' depending on the systemAffected if The KDC daemon (kdc or krb5kdc) is actively running and accepting requests
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Review KDC crash logs for symptomsExamine system logs (/var/log/krb5kdc.log, /var/log/messages, or journalctl) for recent KDC daemon crashes or assertion failuresAffected if Recent crashes or assertion failures are logged, indicating exploitation attempts or successful DoS
A system is affected if it runs MIT Kerberos 5 KDC version 1.7, 1.7.1, or 1.8.x with the KDC service active, as the vulnerability triggers daemon crashes via malformed authentication requests.
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 MIT Kerberos 5 to version 1.7.2 or later (preferably the latest stable 1.8.x or 1.9.x release) to patch the assertion handling vulnerability in the KDC.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2010-0283 — 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-2010-0283 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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- Version or environment caveats, and links to real fixes
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