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.
08a7d1dd194656be881ca1b5fa33251323ab57afe6d39e8321f31a6a5a13744cDebian 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.
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