Type Confusion in PostgreSQL Database

Executive Summary

This is a type confusion vulnerability in PostgreSQL affecting the portal or cursor lifecycle. It allows a user to execute arbitrary code as the operating system user running the database by re-creating a cursor or portal with different types.

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Detection Guidance

To detect this vulnerability, check your PostgreSQL version using the command: psql --version. If your version is below 18.5, 17.11, 16.15, 15.19, or 14.24, your system is vulnerable. Additionally, review database logs for unusual cursor or portal recreation activities that may indicate exploitation attempts.

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Impact Analysis

An attacker could exploit this to run malicious code with the same privileges as the PostgreSQL database service, potentially leading to data theft, system compromise, or disruption of database operations.

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Compliance Impact

This vulnerability allows arbitrary code execution as the database user, potentially leading to unauthorized data access, modification, or deletion. Such breaches could violate GDPR's data protection requirements or HIPAA's safeguards for protected health information, depending on the data stored.

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Mitigation Strategies

Upgrade PostgreSQL to a patched version (18.5, 17.11, 16.15, 15.19, or 14.24 or later) immediately to address the type confusion vulnerability in the portal/cursor lifecycle.

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