CVE-2023-2455

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.

How to fix CVE-2023-2455

To remediate CVE-2023-2455, upgrade the affected package to a fixed version below.

• —upgrade to 13.11-r0 or later
• —upgrade to 13.11-r0 or later
• —upgrade to 14.8-r0 or later
• —upgrade to 15.3-r0 or later
• —upgrade to 11.20.0 or later
• —upgrade to 13.11-0+deb11u1 or later
• —upgrade to 15.3-0+deb12u1 or later

Is CVE-2023-2455 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

• from 0, < 13.11-r0
• from 0, < 13.11-r0
• from 0, < 14.8-r0
• from 0, < 15.3-r0
• >= 11.0.0, < 11.20.0, >= 12.0.0, < 12.15.0, >= 13.0.0, < 13.11.0, >= 14.0.0, < 14.8.0, >= 15.0.0, < 15.3.0
• from 0, < 13.11-0+deb11u1
• from 0, < 15.3-0+deb12u1

CVSS scores

References (6)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2023-2455
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-2455
• WEBaccess.redhat.com/security/cve/CVE-2023-2455
• WEBnvd.nist.gov/vuln/detail/CVE-2023-2455
• WEB