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Category:   Application (Security)  >   Kerberos Vendors:   MIT
Kerberos KDC Null Pointer Dereference in Processing Cross-Realm Referrals Lets Remote Users Deny Service
SecurityTracker Alert ID:  1029370
SecurityTracker URL:  http://securitytracker.com/id/1029370
CVE Reference:   CVE-2013-1417   (Links to External Site)
Date:  Nov 20 2013
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): krb5-1.11 and after
Description:   A vulnerability was reported in Kerberos KDC. A remote authenticated user can cause denial of service conditions.

A remote authenticated user can send specially crafted requests to trigger a null pointer dereference and cause the target KDC to crash.

The vulnerability resides in 'src/kdc/do_tgs_req.c'.

Impact:   A remote authenticated user can cause denial of service conditions on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/krb5/krb5/commit/4c023ba43c16396f0d199e2df1cfa59b88b62acc

Vendor URL:  web.mit.edu/kerberos/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 27 2014 (Oracle Issues Fix for Solaris) Kerberos KDC Null Pointer Dereference in Processing Cross-Realm Referrals Lets Remote Users Deny Service
Oracle has issued a fix for Solaris 10 and 11.1.



 Source Message Contents



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