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Ubuntu 23.04: USN-6296-1 Critical: Code Execution in PostgreSQL

ubuntu
Calendar Grey August 17, 2023
Dist Ubuntu Esm H88
Multiple security vulnerabilities within PostgreSQL have been addressed for Ubuntu versions, mitigating serious execution risks.
Several security issues were fixed in PostgreSQL.

Summary

Several security issues were fixed in PostgreSQL.

Software Description:

- postgresql-15: Object-relational SQL database

- postgresql-14: Object-relational SQL database

- postgresql-12: Object-relational SQL database

Details:

It was discovered that PostgreSQL incorrectly handled certain extension

script substitutions. An attacker having database-level CREATE privileges

can use this issue to execute arbitrary code as the bootstrap superuser.

(CVE-2023-39417)

It was discovered that PostgreSQL incorrectly handled the MERGE command. A

remote attacker could possibly use this issue to bypass certain UPDATE and

SELECT policies. This issue only affected Ubuntu 23.04. (CVE-2023-39418)

Topics%20covered

Topics Covered

security advisory critical code execution update instructions PostgreSQL execution flaws Ubuntu 23.04

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
   postgresql-15                   15.4-0ubuntu0.23.04.1
   postgresql-client-15            15.4-0ubuntu0.23.04.1

Ubuntu 22.04 LTS:
   postgresql-14                   14.9-0ubuntu0.22.04.1
   postgresql-client-14            14.9-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
   postgresql-12                   12.16-0ubuntu0.20.04.1
   postgresql-client-12            12.16-0ubuntu0.20.04.1

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart PostgreSQL to
make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6296-1

CVE-2023-39417, CVE-2023-39418

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6296-1

Topics%20covered

Topics Covered

security advisory critical code execution update instructions PostgreSQL execution flaws Ubuntu 23.04

Package Information

https://launchpad.net/ubuntu/+source/postgresql-15/15.4-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/postgresql-14/14.9-0ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/postgresql-12/12.16-0ubuntu0.20.04.1

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