Ubuntu Security Notice 3744-1 - Andrew Krasichkov discovered that the PostgreSQL client library incorrectly reset its internal state between connections. A remote attacker could possibly use this issue to bypass certain client-side connection security features. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that PostgreSQL incorrectly checked authorization on certain statements. A remote attacker could possibly use this issue to read arbitrary server memory or alter certain data. Various other issues were also addressed.
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