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LIN1021-5755 : Security Advisory - postgresql - CVE-2023-2455

Created: May 8, 2023    Updated: Jun 20, 2023
Resolved Date: May 27, 2023
Found In Version: 10.21.20.1
Fix Version: 10.21.20.18
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace

Description

Row security policies disregard user ID changes after inlining; PostgreSQL could permit incorrect policies to be applied in certain cases where role-specific policies are used and a given query is planned under one role and then executed under other roles. This scenario can happen under security definer functions or when a common user and query is planned initially and then re-used across multiple SET ROLEs. Applying an incorrect policy may permit a user to complete otherwise-forbidden reads and modifications. This affects only databases that have used CREATE POLICY to define a row security policy.

https://nvd.nist.gov/vuln/detail/CVE-2023-2455

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