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Security Advisory

USN-6538-1: PostgreSQL vulnerabilities

USN-6538-1: PostgreSQL vulnerabilities




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 22.04


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: Run `sudo pro fix USN-6538-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: postgresql-server-dev-12 – 12.17-0ubuntu0.20.04.1 libecpg6 – 12.17-0ubuntu0.20.04.1 libpq-dev – 12.17-0ubuntu0.20.04.1 libpgtypes3 – 12.17-0ubuntu0.20.04.1 postgresql-plperl-12 – 12.17-0ubuntu0.20.04.1 postgresql-pltcl-12 – 12.17-0ubuntu0.20.04.1 libecpg-dev – 12.17-0ubuntu0.20.04.1 postgresql-plpython3-12 – 12.17-0ubuntu0.20.04.1 libpq5 – 12.17-0ubuntu0.20.04.1 postgresql-doc-12 – 12.17-0ubuntu0.20.04.1 postgresql-12 – 12.17-0ubuntu0.20.04.1 postgresql-client-12 – 12.17-0ubuntu0.20.04.1 libecpg-compat3 – 12.17-0ubuntu0.20.04.1 No subscription required

CVEs contained in this USN include: CVE-2023-5869, CVE-2023-5870, CVE-2023-5868.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • cflinuxfs4
    • All versions prior to 1.57.0
  • CF Deployment
    • All versions prior to 35.0.0


Users of affected products are strongly encouraged to follow the mitigations below.

The Cloud Foundry project recommends upgrading the following releases:

  • cflinuxfs4
    • Upgrade all versions to 1.57.0 or greater
  • CF Deployment
    • Upgrade all versions to 35.0.0 or greater


2024-03-18: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR