1. Ubuntu Security Notices
  2. USN-6538-1

USN-6538-1: PostgreSQL vulnerabilities

Publication date

6 December 2023

Overview

Several security issues were fixed in PostgreSQL.

Releases

Packages

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)

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)

Update instructions

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.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic postgresql-15 –  15.5-0ubuntu0.23.10.1
postgresql-client-15 –  15.5-0ubuntu0.23.10.1
23.04 lunar postgresql-15 –  15.5-0ubuntu0.23.04.1
postgresql-client-15 –  15.5-0ubuntu0.23.04.1
22.04 jammy postgresql-14 –  14.10-0ubuntu0.22.04.1
postgresql-client-14 –  14.10-0ubuntu0.22.04.1
20.04 focal postgresql-12 –  12.17-0ubuntu0.20.04.1
postgresql-client-12 –  12.17-0ubuntu0.20.04.1

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References

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