Bug 556680 (CVE-2010-0283)

Summary:	CVE-2010-0283 krb5 KDC denial of service
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dpal, kreilly, rcvalle, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-0283
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-29 11:19:50 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	566002, 566003
Bug Blocks:

Description Vincent Danen 2010-01-19 03:45:03 UTC

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 21:22:11 UTC

This is now public upstream via MITKRB5-SA-2010-001:

http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2010-001.txt

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 22:26:32 UTC

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.