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Category:   Application (Database)  >   PostgreSQL Vendors:   postgresql.org
PostgreSQL Transition Relation Name Misquoting Lets Remote Authenticated Users Gain Elevated Privileges
SecurityTracker Alert ID:  1042144
SecurityTracker URL:  https://securitytracker.com/id/1042144
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:   The vendor has issued a fix (10.6, 11.1).

The vendor advisory is available at:

https://www.postgresql.org/about/news/1905/

Vendor URL:  www.postgresql.org/about/news/1905/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 14 2018 (Ubuntu Issues Fix) PostgreSQL Transition Relation Name Misquoting Lets Remote Authenticated Users Gain Elevated Privileges
Ubuntu has issued a fix for Ubuntu Linux 18.04 LTS and 18.10.



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