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Category:   Application (Database)  >   PostgreSQL Vendors:   postgresql.org
(Ubuntu Issues Fix) PostgreSQL Transition Relation Name Misquoting Lets Remote Authenticated Users Gain Elevated Privileges
SecurityTracker Alert ID:  1042145
SecurityTracker URL:  http://securitytracker.com/id/1042145
CVE Reference:   CVE-2018-16850   (Links to External Site)
Date:  Nov 14 2018
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in PostgreSQL. A remote authenticated user can gain elevated privileges.

A remote authenticated user can CREATE a specially crafted transition name that is not properly quoted and cause it to be later executed with non-temporary schema or TRIGGER privileges and gain elevated privileges on the target system.

The pg_upgrade and pg_dump functions are affected via 'CREATE TRIGGER ... REFERENCING'.

Karl Czajkowski reported this vulnerability.

Impact:   A remote authenticated user can gain elevated privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://usn.ubuntu.com/usn/usn-3818-1

Vendor URL:  usn.ubuntu.com/usn/usn-3818-1 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  18.04 LTS, 18.10

Message History:   This archive entry is a follow-up to the message listed below.
Nov 14 2018 PostgreSQL Transition Relation Name Misquoting Lets Remote Authenticated Users Gain Elevated Privileges



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