Ubuntu Security Notice 4090-1 - Tom Lane discovered that PostgreSQL did not properly restrict functions declared as "SECURITY DEFINER". An attacker could use this to execute arbitrary SQL with the permissions of the function owner. Andreas Seltenreich discovered that PostgreSQL did not properly handle user-defined hash equality operators. An attacker could use this to expose sensitive information. This issue only affected Ubuntu 19.04. Various other issues were also addressed.
ccaf4895e6cf0e7558139305e2b1c8b5Debian Linux Security Advisory 4493-1 - Two security issues have been discovered in the PostgreSQL database system, which could result in privilege escalation, denial of service or memory disclosure.
4425ba69c4e109bad5da897ac9cbe1e2Debian Linux Security Advisory 4492-1 - A issue has been discovered in the PostgreSQL database system, which could result in privilege escalation.
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