N/A - USN-4090-1

Executive Summary

Summary
Title	PostgreSQL vulnerabilities

Informations
Name	USN-4090-1	First vendor Publication	2019-08-09
Vendor	Ubuntu	Last vendor Modification	2019-08-09
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
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Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in PostgreSQL.

Software Description: - postgresql-11: Object-relational SQL database - postgresql-10: Object-relational SQL database - postgresql-9.5: Object-relational SQL database

Details:

Tom Lane discovered that PostgreSQL did not properly restrict functions declared as "SECURITY DEFINER". An attacker could use this to execute arbitrary SQL with the permissions of the function owner. (CVE-2019-10208)

Andreas Seltenreich discovered that PostgreSQL did not properly handle user-defined hash equality operators. An attacker could use this to expose sensitive information (arbitrary PostgreSQL server memory). This issue only affected Ubuntu 19.04. (CVE-2019-10209)

Update instructions:

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

Ubuntu 19.04:
postgresql-11 11.5-0ubuntu0.19.04.1

Ubuntu 18.04 LTS:
postgresql-10 10.10-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
postgresql-9.5 9.5.19-0ubuntu0.16.04.1

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://usn.ubuntu.com/4090-1
CVE-2019-10208, CVE-2019-10209

Package Information:
https://launchpad.net/ubuntu/+source/postgresql-11/11.5-0ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/postgresql-10/10.10-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/postgresql-9.5/9.5.19-0ubuntu0.16.04.1