CVE-2023-2454: Input Validation

Published May 12, 2023
·
Updated

CVE-2023-2454: CREATE SCHEMA ... schemaelement defeats protective searchpath changes.

Versions Affected: 11 - 15. This problem is quite old.

This enabled an attacker having database-level CREATE privilege to execute arbitrary code as the bootstrap superuser. Database owners have that right by default, and explicit grants may extend it to other users.

https://www.postgresql.org/support/security/CVE-2023-2454/

Other sources

schemaelement defeats protective searchpath changes; It was found that certain database calls in PostgreSQL could permit an authed attacker with elevated database-level privileges to execute arbitrary code.

— Ubuntu

Affected Software

23 affected componentsFixes available
debian/postgresql-11<=11.16-0+deb10u1
11.22-0+deb10u2
debian/postgresql-13
13.13-0+deb11u113.14-0+deb11u1
debian/postgresql-15
15.5-0+deb12u115.6-0+deb12u1
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
ubuntu/postgresql-9.5<9.5.25-0ubuntu0.16.04.1+
9.5.25-0ubuntu0.16.04.1+
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

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/postgresql-11 to a version that resolves this vulnerability.

    Fixed in 11.22-0+deb10u2
  2. Upgrade

    Upgrade debian/postgresql-13 to a version that resolves this vulnerability.

    Fixed in 13.13-0+deb11u1Fixed in 13.14-0+deb11u1
  3. Upgrade

    Upgrade debian/postgresql-15 to a version that resolves this vulnerability.

    Fixed in 15.5-0+deb12u1Fixed in 15.6-0+deb12u1
  4. Upgrade

    Upgrade ubuntu/postgresql-10 to a version that resolves this vulnerability.

    Fixed in 10.23-0ubuntu0.18.04.2
  5. Upgrade

    Upgrade ubuntu/postgresql-12 to a version that resolves this vulnerability.

    Fixed in 12.15-0ubuntu0.20.04.1
  6. Upgrade

    Upgrade ubuntu/postgresql-14 to a version that resolves this vulnerability.

    Fixed in 14.8-0ubuntu0.22.04.1
  7. Upgrade

    Upgrade ubuntu/postgresql-14 to a version that resolves this vulnerability.

    Fixed in 14.8-0ubuntu0.22.10.1
  8. Upgrade

    Upgrade ubuntu/postgresql-15 to a version that resolves this vulnerability.

    Fixed in 15.3-0ubuntu0.23.04.1
  9. Upgrade

    Upgrade ubuntu/postgresql-9.5 to a version that resolves this vulnerability.

    Fixed in 9.5.25-0ubuntu0.16.04.1+
  10. Upgrade

    Upgrade redhat/PostgreSQL to a version that resolves this vulnerability.

    Fixed in 15.3
  11. Upgrade

    Upgrade redhat/PostgreSQL to a version that resolves this vulnerability.

    Fixed in 14.8
  12. Upgrade

    Upgrade redhat/PostgreSQL to a version that resolves this vulnerability.

    Fixed in 13.11
  13. Upgrade

    Upgrade redhat/PostgreSQL to a version that resolves this vulnerability.

    Fixed in 12.15
  14. Upgrade

    Upgrade redhat/PostgreSQL to a version that resolves this vulnerability.

    Fixed in 11.20

Event History

May 12, 2023
CVE Published
via Ubuntu·12:00 AM
May 16, 2023
Data Sourced
via Red Hat·10:07 AM
DescriptionSeverityAffected Software
Jun 9, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Jan 12, 2024
Data Sourced
via Launchpad·12:16 AM
Description

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2023-2454?

The severity of CVE-2023-2454 is high (7).

2

How does CVE-2023-2454 affect PostgreSQL?

CVE-2023-2454 can permit an authenticated attacker with elevated database-level privileges to execute arbitrary code in PostgreSQL.

3

Which versions of PostgreSQL are affected by CVE-2023-2454?

CVE-2023-2454 affects PostgreSQL versions 9.5, 10, 11, 12, 13, 14, and 15.

4

How can I fix CVE-2023-2454 in PostgreSQL?

To fix CVE-2023-2454 in PostgreSQL, update to the latest available version and apply any necessary patches.

5

Where can I find more information about CVE-2023-2454?

You can find more information about CVE-2023-2454 at the following references: [1] [2] [3]

Company

Resources

Contact

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