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Category:   Application (Security)  >   Kerberos Vendors:   MIT
(Sun Issues Advisory) Kerberos ASN.1 GeneralizedTime Decoder Bug Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022013
SecurityTracker URL:  http://securitytracker.com/id/1022013
CVE Reference:   CVE-2009-0846   (Links to External Site)
Date:  Apr 8 2009
Impact:   Execution of arbitrary code via network, User access via network
Vendor Confirmed:  Yes  
Version(s): 5
Description:   A vulnerability was reported in Kerberos. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted ASN.1 encoded data to cause the asn1_decode_generaltime() function to free an uninitialized pointer and potentially execute arbitrary code on the target system. The code will run with the privileges of the target service.

Impact:   A remote user can execute arbitrary code on the target system.
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-2009-002.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 GeneralizedTime Decoder Bug Lets Remote Users Execute Arbitrary Code



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