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Category:   Application (Security)  >   Kerberos Vendors:   MIT
MIT Kerberos Lets Remote Authenticated Users Gain Elevated Privileges in Certain Cases
SecurityTracker Alert ID:  1042071
SecurityTracker URL:  http://securitytracker.com/id/1042071
CVE Reference:   CVE-2018-5729, CVE-2018-5730   (Links to External Site)
Date:  Nov 12 2018
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): krb5 1.6 and later
Description:   Two vulnerabilities were reported in MIT Kerberos. A remote authenticated user can gain elevated privileges in certain cases.

A remote authenticated user with permission to add principals to an LDAP Kerberos database can circumvent a DN container check by supply specially crafted data to the target database module [CVE-2018-5729].

Sharwan Ram and Pooja Anil reported this vulnerability.

A remote authenticated user with permission to add principals to an LDAP Kerberos database can supply specially crafted data containing both a "linkdn" and "containerdn" database argument to the target database module [CVE-2018-5730].

Impact:   A remote authenticated user can gain elevated privileges on the target system in certain cases.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1

Vendor URL:  github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1 (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.
Nov 12 2018 (Oracle Issues Fix for Oracle Linux) MIT Kerberos Lets Remote Authenticated Users Gain Elevated Privileges in Certain Cases
Oracle has issued a fix for Oracle Linux 7.



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