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Amazon Linux AMI : postgresql92 (ALAS-2017-838)

high Nessus Plugin ID 100639

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

Selectivity estimators bypass SELECT privilege checks

It was found that some selectivity estimation functions did not check user privileges before providing information from pg_statistic, possibly leaking information. An unprivileged attacker could use this flaw to steal some information from tables they are otherwise not allowed to access. (CVE-2017-7484)

pg_user_mappings view discloses foreign server passwords

It was found that the pg_user_mappings view from postgresql could disclose information about user mappings to a foreign database to unprivileged users. An authenticated attacker with USAGE privilege for this mapping could, when querying the view, obtain user mapping data, such as the username and password used to connect to the foreign database. (CVE-2017-7486 )

Solution

Run 'yum update postgresql92' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-838.html

Plugin Details

Severity: High

ID: 100639

File Name: ala_ALAS-2017-838.nasl

Version: 3.5

Type: local

Agent: unix

Published: 6/7/2017

Updated: 4/18/2018

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:postgresql92-debuginfo, p-cpe:/a:amazon:linux:postgresql92-server, p-cpe:/a:amazon:linux:postgresql92-docs, p-cpe:/a:amazon:linux:postgresql92-pltcl, p-cpe:/a:amazon:linux:postgresql92-plperl, p-cpe:/a:amazon:linux:postgresql92-contrib, p-cpe:/a:amazon:linux:postgresql92-plpython27, p-cpe:/a:amazon:linux:postgresql92-devel, p-cpe:/a:amazon:linux:postgresql92-plpython26, p-cpe:/a:amazon:linux:postgresql92, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:postgresql92-test, p-cpe:/a:amazon:linux:postgresql92-server-compat, p-cpe:/a:amazon:linux:postgresql92-libs

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 6/6/2017

Reference Information

CVE: CVE-2017-7484, CVE-2017-7486

ALAS: 2017-838