Bug 556680 - (CVE-2010-0283) CVE-2010-0283 krb5 KDC denial of service
CVE-2010-0283 krb5 KDC denial of service
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 566002 566003
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Reported: 2010-01-18 22:45 EST by Vincent Danen
Modified: 2012-05-24 16:57 EDT (History)
4 users (show)

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Doc Type: Bug Fix
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Last Closed: 2010-03-29 07:19:50 EDT
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Description Vincent Danen 2010-01-18 22:45:03 EST
A flaw was found in how the KDC processed invalid requests.  An unauthenticated remote attacker could send an invalid request to a KDC process that would cause it to crash due to an assertion failure, resulting in a denial of service of the KDC.

This flaw only affects MIT krb5 version 1.7 and later; earlier versions did not contain the vulnerable code.
Comment 2 Vincent Danen 2010-02-16 16:22:11 EST
This is now public upstream via MITKRB5-SA-2010-001:


This issue does not affect Red Hat Enterprise Linux 3, 4, or 5 as they do not ship with Kerberos >=1.7, and this is a vulnerability in code introduced in Kerberos 1.7.

This issue does affect Fedora 11 and 12.
Comment 6 Fedora Update System 2010-02-18 17:26:32 EST
krb5-1.7.1-2.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.

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