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Ubuntu Security Notice USN-3744-1

Ubuntu Security Notice USN-3744-1
Posted Aug 17, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3744-1 - Andrew Krasichkov discovered that the PostgreSQL client library incorrectly reset its internal state between connections. A remote attacker could possibly use this issue to bypass certain client-side connection security features. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that PostgreSQL incorrectly checked authorization on certain statements. A remote attacker could possibly use this issue to read arbitrary server memory or alter certain data. Various other issues were also addressed.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10915, CVE-2018-10925
SHA-256 | 10c7a46516045ae2ad89d98e1e273b9ca69727a9da14ccba89173432684540ae

Ubuntu Security Notice USN-3744-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3744-1
August 16, 2018

postgresql-10, postgresql-9.3, postgresql-9.5 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PostgreSQL.

Software Description:
- postgresql-10: object-relational SQL database
- postgresql-9.5: Object-relational SQL database
- postgresql-9.3: Object-relational SQL database

Details:

Andrew Krasichkov discovered that the PostgreSQL client library incorrectly
reset its internal state between connections. A remote attacker could
possibly use this issue to bypass certain client-side connection security
features. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2018-10915)

It was discovered that PostgreSQL incorrectly checked authorization on
certain statements. A remote attacker could possibly use this issue to
read arbitrary server memory or alter certain data. (CVE-2018-10925)

Update instructions:

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

Ubuntu 18.04 LTS:
postgresql-10 10.5-0ubuntu0.18.04

Ubuntu 16.04 LTS:
postgresql-9.5 9.5.14-0ubuntu0.16.04

Ubuntu 14.04 LTS:
postgresql-9.3 9.3.24-0ubuntu0.14.04

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/usn/usn-3744-1
CVE-2018-10915, CVE-2018-10925

Package Information:
https://launchpad.net/ubuntu/+source/postgresql-10/10.5-0ubuntu0.18.04
https://launchpad.net/ubuntu/+source/postgresql-9.5/9.5.14-0ubuntu0.16.04
https://launchpad.net/ubuntu/+source/postgresql-9.3/9.3.24-0ubuntu0.14.04
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