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List: ubuntu-security-announce
Subject: [USN-3390-1] PostgreSQL vulnerabilities
From: Marc Deslauriers <marc.deslauriers () canonical ! com>
Date: 2017-08-15 17:34:52
Message-ID: 079078c6-7ff2-cdcf-163e-ee14bc910072 () canonical ! com
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==========================================================================
Ubuntu Security Notice USN-3390-1
August 15, 2017
postgresql-9.3, postgresql-9.5, postgresql-9.6 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in PostgreSQL.
Software Description:
- postgresql-9.6: object-relational SQL database
- postgresql-9.5: Object-relational SQL database
- postgresql-9.3: Object-relational SQL database
Details:
Ben de Graaff, Jelte Fennema, and Jeroen van der Ham discovered that
PostgreSQL allowed the use of empty passwords in some authentication
methods, contrary to expected behaviour. A remote attacker could use an
empty password to authenticate to servers that were believed to have
password login disabled. (CVE-2017-7546)
Jeff Janes discovered that PostgreSQL incorrectly handled the
pg_user_mappings catalog view. A remote attacker without server privileges
could possibly use this issue to obtain certain passwords. (CVE-2017-7547)
Chapman Flack discovered that PostgreSQL incorrectly handled lo_put()
permissions. A remote attacker could possibly use this issue to change the
data in a large object. (CVE-2017-7548)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
postgresql-9.6 9.6.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
postgresql-9.5 9.5.8-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
postgresql-9.3 9.3.18-0ubuntu0.14.04.1
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://www.ubuntu.com/usn/usn-3390-1
CVE-2017-7546, CVE-2017-7547, CVE-2017-7548
Package Information:
https://launchpad.net/ubuntu/+source/postgresql-9.6/9.6.4-0ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/postgresql-9.5/9.5.8-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/postgresql-9.3/9.3.18-0ubuntu0.14.04.1
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