An issue has been found in PostgreSQL >= 11.0 and < 11.5. In a database containing hypothetical, user-defined hash equality operators, an attacker could read arbitrary bytes of server memory. For an attack to become possible, a superuser would need to create unusual operators. It is possible for operators not purpose-crafted for attack to have the properties that enable an attack, but we are not aware of specific examples.
An issue has been found in PostgreSQL >= 11.0 and < 11.5. In a database containing hypothetical, user-defined hash equality operators, an attacker could read arbitrary bytes of server memory. For an attack to become possible, a superuser would need to create unusual operators. It is possible for operators not purpose-crafted for attack to have the properties that enable an attack, but we are not aware of specific examples.
https://www.postgresql.org/about/news/1960/ https://bugzilla.redhat.com/show_bug.cgi?id=1734447
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