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Ubuntu Security Notice USN-5645-1

Ubuntu Security Notice USN-5645-1
Posted Sep 29, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5645-1 - Jacob Champion discovered that PostgreSQL incorrectly handled SSL certificate verification and encryption. A remote attacker could possibly use this issue to inject arbitrary SQL queries when a connection is first established. Tom Lane discovered that PostgreSQL incorrect handled certain array subscripting calculations. An authenticated attacker could possibly use this issue to overwrite server memory and escalate privileges.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-23214, CVE-2021-32027
SHA-256 | fa94546c58f17991b5a646049ec8ec30cd923dd7fcf8ea2301f30eeeb7d86f13

Ubuntu Security Notice USN-5645-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5645-1
September 28, 2022

postgresql-9.5 vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in PostgreSQL.

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

Details:

Jacob Champion discovered that PostgreSQL incorrectly handled SSL
certificate verification and encryption. A remote attacker could possibly
use this issue to inject arbitrary SQL queries when a connection is first
established. (CVE-2021-23214)

Tom Lane discovered that PostgreSQL incorrect handled certain array
subscripting calculations. An authenticated attacker could possibly use
this issue to overwrite server memory and escalate privileges.
(CVE-2021-32027)

Update instructions:

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

Ubuntu 16.04 ESM:
postgresql-9.5 9.5.25-0ubuntu0.16.04.1+esm1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5645-1
CVE-2021-23214, CVE-2021-32027
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