FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

PostgreSQL server -- two security issues

Affected packages
postgresql13-server < 13.3
postgresql12-server < 12.7
postgresql11-server < 11.12
postgresql10-server < 10.17
postgresql96-server < 9.6.22


VuXML ID 62da9702-b4cc-11eb-b9c9-6cc21735f730
Discovery 2021-05-13
Entry 2021-05-14

The PostgreSQL project reports:

Memory disclosure in INSERT ... ON CONFLICT ... DO UPDATE

Using an INSERT ... ON CONFLICT ... DO UPDATE command on a purpose-crafted table, an attacker can read arbitrary bytes of server memory. In the default configuration, any authenticated database user can create prerequisite objects and complete this attack at will. A user lacking the CREATE and TEMPORARY privileges on all databases and the CREATE privilege on all schemas cannot use this attack at will..

Buffer overrun from integer overflow in array subscripting calculations

While modifying certain SQL array values, missing bounds checks let authenticated database users write arbitrary bytes to a wide area of server memory.