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Ubuntu Security Notice USN-6538-1

Ubuntu Security Notice USN-6538-1
Posted Dec 7, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6538-1 - 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. 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. Hemanth Sandrana and Mahendrakar Srinivasarao discovered that PostgreSQL allowed the pg_signal_backend role to signal certain superuser processes, contrary to expectations.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2023-5868, CVE-2023-5869, CVE-2023-5870
SHA-256 | 9afe5a97b3af7f1f34949320cb900c8bf0c7916f33a0ea18ec291e8870e9b195

Ubuntu Security Notice USN-6538-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6538-1
December 06, 2023

postgresql-12, postgresql-14, postgresql-15 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

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)

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.

References:
https://ubuntu.com/security/notices/USN-6538-1
CVE-2023-5868, CVE-2023-5869, CVE-2023-5870

Package Information:
https://launchpad.net/ubuntu/+source/postgresql-15/15.5-0ubuntu0.23.10.1
https://launchpad.net/ubuntu/+source/postgresql-15/15.5-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/postgresql-14/14.10-0ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/postgresql-12/12.17-0ubuntu0.20.04.1

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