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USN-6538-2: PostgreSQL vulnerabilities

17 January 2024

Several security issues were fixed in PostgreSQL.

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Details

USN-6538-1 fixed several vulnerabilities in PostgreSQL. This update provides
the corresponding updates for Ubuntu 18.04 LTS.

Original advisory 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)

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Update instructions

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

Ubuntu 18.04

After a standard system update you need to restart PostgreSQL to make all
the necessary changes.

References

Related notices

  • USN-6538-1: postgresql-12, postgresql-doc-15, postgresql-server-dev-15, postgresql-plperl-12, libpq5, postgresql-plpython3-12, postgresql-plperl-14, libpgtypes3, libecpg6, postgresql-client-15, postgresql-14, postgresql-client-12, postgresql-plpython3-15, postgresql-doc-12, postgresql-server-dev-14, postgresql-plpython3-14, postgresql-pltcl-15, libecpg-compat3, libecpg-dev, libpq-dev, postgresql-server-dev-12, postgresql-plperl-15, postgresql-client-14, postgresql-pltcl-12, postgresql-15, postgresql-doc-14, postgresql-pltcl-14
  • USN-6570-1: postgresql-contrib-9.5, postgresql-plpython3-9.5, postgresql-9.5, postgresql-server-dev-9.5, postgresql-pltcl-9.5, libecpg-compat3, libecpg-dev, libpq5, libpq-dev, postgresql-client-9.5, postgresql-plpython-9.5, libpgtypes3, libecpg6, postgresql-plperl-9.5, postgresql-doc-9.5

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