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AUSCERT External Security Bulletin Redistribution
ESB-2017.2866.2
postgresql-common vulnerabilities
28 November 2017
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AusCERT Security Bulletin Summary
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Product: postgresql-common
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-8806 CVE-2016-1255
Reference: ESB-2017.2863
ESB-2017.2550
ASB-2016.0065
Original Bulletin:
http://www.ubuntu.com/usn/usn-3476-1
http://www.ubuntu.com/usn/usn-3476-2
Revision History: November 28 2017: Additional Operating Systems
November 10 2017: Initial Release
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Ubuntu Security Notice USN-3476-1
November 09, 2017
postgresql-common vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.10
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
postgresql-common could be made to overwrite files as the administrator.
Software Description:
- - postgresql-common: PostgreSQL database-cluster manager
Details:
Dawid Golunski discovered that the postgresql-common pg_ctlcluster script
incorrectly handled symlinks. A local attacker could possibly use this
issue to escalate privileges. This issue only affected Ubuntu 14.04 LTS and
Ubuntu 16.04 LTS. (CVE-2016-1255)
It was discovered that the postgresql-common helper scripts incorrectly
handled symlinks. A local attacker could possibly use this issue to
escalate privileges. (CVE-2017-8806)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.10:
postgresql-common 184ubuntu1.1
Ubuntu 17.04:
postgresql-common 179ubuntu0.1
Ubuntu 16.04 LTS:
postgresql-common 173ubuntu0.1
Ubuntu 14.04 LTS:
postgresql-common 154ubuntu1.1
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3476-1
CVE-2016-1255, CVE-2017-8806
Package Information:
https://launchpad.net/ubuntu/+source/postgresql-common/184ubuntu1.1
https://launchpad.net/ubuntu/+source/postgresql-common/179ubuntu0.1
https://launchpad.net/ubuntu/+source/postgresql-common/173ubuntu0.1
https://launchpad.net/ubuntu/+source/postgresql-common/154ubuntu1.1
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Ubuntu Security Notice USN-3476-2
November 27, 2017
postgresql-common vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
postgresql-common could be made to overwrite files as the
administrator.
Software Description:
- - postgresql-common: PostgreSQL database-cluster manager
Details:
USN-3476-1 fixed two vulnerabilities in postgresql-common. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
 Dawid Golunski discovered that the postgresql-common pg_ctlcluster
 script incorrectly handled symlinks. A local attacker could possibly
 use this issue to escalate privileges. (CVE-2016-1255)
 It was discovered that the postgresql-common helper scripts
 incorrectly handled symlinks. A local attacker could possibly use this
 issue to escalate privileges. (CVE-2017-8806)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
 postgresql-common 129ubuntu1.2
In general, a standard system update will make all the necessary
changes.
References:
 https://www.ubuntu.com/usn/usn-3476-2
 https://www.ubuntu.com/usn/usn-3476-1
 CVE-2016-1255, CVE-2017-8806
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