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Category:   Application (Security)  >   Kerberos Vendors:   MIT
Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1034914
SecurityTracker URL:  http://securitytracker.com/id/1034914
CVE Reference:   CVE-2015-8629   (Links to External Site)
Date:  Feb 2 2016
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Kerberos. A remote authenticated user can obtain potentially sensitive information on the target system.

A remote authenticated user can send specially crafted data without a terminating zero byte to kadmind to trigger a flaw in xdr_nullstring() and obtain potentially sensitive information from memory on the target system.

Impact:   A remote authenticated user can obtain potentially sensitive information from memory on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/krb5/krb5/commit/df17a1224a3406f57477bcd372c61e04c0e5a5bb

Cause:   Access control error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 23 2016 (Red Hat Issues Fix) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Mar 24 2016 (Oracle Issues Fix for Oracle Linux) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
Oracle has issued a fix for Oracle Linux 6.
Mar 24 2016 (CentOS Issues Fix) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
CentOS has issued a fix for CentOS 6.
Apr 1 2016 (Red Hat Issues Fix) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Apr 1 2016 (CentOS Issues Fix) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
CentOS has issued a fix for CentOS 7.
Apr 1 2016 (Oracle Issues Fix for Oracle Linux) Kerberos kadmind Null Termination Bug in xdr_nullstring() Lets Remote Authenticated Users Obtain Potentially Sensitive Information
Oracle has issued a fix for Oracle Linux 7.



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