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Category:   Application (Security)  >   Kerberos Vendors:   MIT
(Ubuntu Issues Fix) MIT Kerberos Multiple Bugs Let Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1034145
SecurityTracker URL:  http://securitytracker.com/id/1034145
CVE Reference:   CVE-2015-2695, CVE-2015-2696, CVE-2015-2697, CVE-2015-2698   (Links to External Site)
Date:  Nov 13 2015
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5-1.5 and later
Description:   Three vulnerabilities were reported in MIT Kerberos. A remote or remote authenticated user can cause the target service to crash.

A remote user can make a specially crafted gss_inquire_context() call on a partially-established SPNEGO context to trigger a pointer type error in the GSS-API library and cause a process crash [CVE-2015-2695].

A remote user can make a specially crafted gss_inquire_context() on a partially-established IAKERB context can trigger a pointer type error in the the GSS-API library and cause a process crash [CVE-2015-2696]. Versions 5-1.9 and later are affected.

A remote authenticated user can send a TGS request with a specially crafted realm field beginning with a null byte to cause the target KDC to crash [CVE-2015-2697]. Versions 5-1.7 and later are affected.

Impact:   A remote or remote authenticated user can cause the target service to crash.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2810-1

Vendor URL:  www.ubuntu.com/usn/usn-2810-1 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 LTS, 14.04 LTS, 15.04, 15.10

Message History:   This archive entry is a follow-up to the message listed below.
Nov 5 2015 MIT Kerberos Multiple Bugs Let Remote Users Cause the Target Service to Crash



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