postgresql:12 security update

PostgreSQL is an advanced object-relational database management system (DBMS).

The following packages have been upgraded to a later upstream version: postgresql (12.7)

Security Fix(es):

* postgresql: Buffer overrun from integer overflow in array subscripting calculations (CVE-2021-32027)
* postgresql: Memory disclosure in INSERT ... ON CONFLICT ... DO UPDATE (CVE-2021-32028)
* postgresql: Memory disclosure in partitioned-table UPDATE ... RETURNING (CVE-2021-32029)
* postgresql: Partition constraint violation errors leak values of denied columns (CVE-2021-3393)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVE-2021-32027
A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before 9.6.22. While modifying certain SQL array values, missing bounds checks let authenticated database users write arbitrary bytes to a wide area of server memory. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVE-2021-32028
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
CVE-2021-32029
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
CVE-2021-3393
An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

Modularity name: postgresql
Stream name: 12