medium
5.4
CWE
20
Advisory Published
Updated

CVE-2023-2455: Input Validation

First published: Fri May 12 2023(Updated: )

CVE-2023-2455: Row security policies disregard user ID changes after inlining. Versions Affected: 11 - 15. This problem is quite old. While <a href="https://access.redhat.com/security/cve/CVE-2016-2193">CVE-2016-2193</a> fixed most interaction between row security and user ID changes, it missed a scenario involving function inlining. This leads to potentially incorrect policies being applied in 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. <a href="https://www.postgresql.org/support/security/CVE-2023-2455/">https://www.postgresql.org/support/security/CVE-2023-2455/</a>

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/PostgreSQL<15.3
15.3
redhat/PostgreSQL<14.8
14.8
redhat/PostgreSQL<13.11
13.11
redhat/PostgreSQL<12.15
12.15
redhat/PostgreSQL<11.20
11.20
PostgreSQL PostgreSQL>=11.0<11.20
PostgreSQL PostgreSQL>=12.0<12.15
PostgreSQL PostgreSQL>=13.0<13.11
PostgreSQL PostgreSQL>=14.0<14.8
PostgreSQL PostgreSQL>=15.0<15.3
Redhat Software Collections
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
Fedoraproject Fedora=38
ubuntu/postgresql-10<10.23-0ubuntu0.18.04.2
10.23-0ubuntu0.18.04.2
ubuntu/postgresql-12<12.15-0ubuntu0.20.04.1
12.15-0ubuntu0.20.04.1
ubuntu/postgresql-14<14.8-0ubuntu0.22.04.1
14.8-0ubuntu0.22.04.1
ubuntu/postgresql-14<14.8-0ubuntu0.22.10.1
14.8-0ubuntu0.22.10.1
ubuntu/postgresql-15<15.3-0ubuntu0.23.04.1
15.3-0ubuntu0.23.04.1
debian/postgresql-11<=11.16-0+deb10u1
11.22-0+deb10u2
debian/postgresql-13
13.13-0+deb11u1
13.14-0+deb11u1
debian/postgresql-15
15.5-0+deb12u1
15.6-0+deb12u1

Remedy

https://github.com/postgres/postgres/commit/473626cf00babd829eb15c36b51dfb358d32bc95

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-2455?

    The severity of CVE-2023-2455 is medium (5.4).

  • What is the affected software for CVE-2023-2455?

    The affected software for CVE-2023-2455 includes PostgreSQL versions 10.23-0ubuntu0.18.04.2, 12.15-0ubuntu0.20.04.1, 14.8-0ubuntu0.22.04.1, 14.8-0ubuntu0.22.10.1, 15.3-0ubuntu0.23.04.1, Debian versions 11.21-0+deb10u2, 13.11-0+deb11u1, 15.3-0+deb12u1, 15.4-3, Redhat versions 15.3, 14.8, 13.11, 12.15, and 11.20, and Redhat Enterprise Linux versions 8.0 and 9.0.

  • What is the vulnerability description of CVE-2023-2455?

    CVE-2023-2455 is a vulnerability where row security policies in PostgreSQL disregard user ID changes after inlining, potentially allowing incorrect policies to be applied.

  • How do I fix CVE-2023-2455?

    To fix CVE-2023-2455, users should update to the latest version of PostgreSQL, as provided in the affected software list.

  • Where can I find more information about CVE-2023-2455?

    More information about CVE-2023-2455 can be found at the following references: [1] [2] [3].

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