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Category:   Application (Security)  >   Kerberos Vendors:   MIT
(Sun Issues Advisory) Kerberos ASN.1 Decoding Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1022014
SecurityTracker URL:  http://securitytracker.com/id/1022014
CVE Reference:   CVE-2009-0847   (Links to External Site)
Date:  Apr 8 2009
Impact:   Denial of service via network
Vendor Confirmed:  Yes  
Version(s): 5-1.6.3
Description:   A vulnerability was reported in Kerberos. A remote user can cause denial of service conditions against a KDC or kinit program.

A remote user can exploit a flaw in the asn1buf_imbed() function to trigger a memory allocation error or, in some cases, trigger a crash.

Impact:   A remote user can cause the target KDC or kinit program to crash.
Solution:   Sun is working on a fix.

The Sun advisory is available at:

http://sunsolve.sun.com/search/document.do?assetkey=1-66-256728-1

Vendor URL:  web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  UNIX (Solaris - SunOS)
Underlying OS Comments:  9, 10, OpenSolaris

Message History:   This archive entry is a follow-up to the message listed below.
Apr 7 2009 Kerberos ASN.1 Decoding Bug Lets Remote Users Deny Service



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