Ubuntu 23.10: USN-6538-1 critical: PostgreSQL remote code execution

ubuntu

December 6, 2023

Several security issues were fixed in PostgreSQL.

Summary

Several security issues were fixed in PostgreSQL.

Software Description:

- postgresql-15: Object-relational SQL database

- postgresql-14: Object-relational SQL database

- postgresql-12: Object-relational SQL database

Details:

Jingzhou Fu discovered that PostgreSQL incorrectly handled certain unknown

arguments in aggregate function calls. A remote attacker could possibly use

this issue to obtain sensitive information. (CVE-2023-5868)

Pedro Gallegos discovered that PostgreSQL incorrectly handled modifying

certain SQL array values. A remote attacker could use this issue to obtain

sensitive information, or possibly execute arbitrary code. (CVE-2023-5869)

Hemanth Sandrana and Mahendrakar Srinivasarao discovered that PostgreSQL

allowed the pg_signal_backend role to signal certain superuser processes,

contrary to expectations. (CVE-2023-5870)

Topics Covered

security advisory critical issue remote code execution Ubuntu information disclosure PostgreSQL

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.10:
   postgresql-15                   15.5-0ubuntu0.23.10.1
   postgresql-client-15            15.5-0ubuntu0.23.10.1

Ubuntu 23.04:
   postgresql-15                   15.5-0ubuntu0.23.04.1
   postgresql-client-15            15.5-0ubuntu0.23.04.1

Ubuntu 22.04 LTS:
   postgresql-14                   14.10-0ubuntu0.22.04.1
   postgresql-client-14            14.10-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
   postgresql-12                   12.17-0ubuntu0.20.04.1
   postgresql-client-12            12.17-0ubuntu0.20.04.1

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart PostgreSQL to
make all the necessary changes.