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Category:   Application (Security)  >   Kerberos Vendors:   MIT
MIT Kerberos Buffer Overflow in kadmind with LDAP Backend Lets Remote Authenticated Users Execute Arbitrary Code
SecurityTracker Alert ID:  1030705
SecurityTracker URL:  http://securitytracker.com/id/1030705
CVE Reference:   CVE-2014-4345   (Links to External Site)
Date:  Aug 11 2014
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5-1.6 to 5-1.12.2
Description:   A vulnerability was reported in MIT Kerberos. A remote authenticated user can execute arbitrary code on the target system.

On systems where kadmind uses LDAP for the KDC database, a remote authenticated user can send specially crafted data to trigger an off-by-one buffer overflow in kadmind and potentially execute arbitrary code on the target system.

The krb5_encode_krbsecretkey() function is affected.

Tomas Kuthan and Greg Hudson reported this vulnerability.

Impact:   A remote authenticated user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (krb5-1.11.6, krb5-1.12.2).

A patch is also available.

The vendor's advisory is available at:

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2014-001.txt

Vendor URL:  web.mit.edu/kerberos/advisories/MITKRB5-SA-2014-001.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 17 2014 (Red Hat Issues Fix) MIT Kerberos Buffer Overflow in kadmind with LDAP Backend Lets Remote Authenticated Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 5.
Oct 14 2014 (Red Hat Issues Fix) MIT Kerberos Buffer Overflow in kadmind with LDAP Backend Lets Remote Authenticated Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Mar 6 2015 (Red Hat Issues Fix) MIT Kerberos Buffer Overflow in kadmind with LDAP Backend Lets Remote Authenticated Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



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