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USN-6538-1: PostgreSQL vulnerabilities

6 December 2023

Several security issues were fixed in PostgreSQL.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04

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.

Related notices

  • USN-6570-1: libpq5, postgresql-client-9.5, postgresql-doc-9.5, libpq-dev, postgresql-plperl-9.5, postgresql-plpython-9.5, libecpg6, libpgtypes3, libecpg-compat3, postgresql-contrib-9.5, postgresql-server-dev-9.5, libecpg-dev, postgresql-9.5, postgresql-plpython3-9.5, postgresql-pltcl-9.5
  • USN-6538-2: postgresql-client-10, libpq5, libpq-dev, postgresql-plperl-10, postgresql-server-dev-10, postgresql-doc-10, libecpg6, libpgtypes3, libecpg-compat3, postgresql-10, postgresql-plpython-10, postgresql-plpython3-10, postgresql-pltcl-10, libecpg-dev