Detections
Analytics

Oracle Linux 8 : ELSA-2020-5620-1: / postgresql:12 (ELSA-2020-56201)

high Nessus Plugin ID 144564

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-56201 advisory.

 - It was found that PostgreSQL versions before 12.4, before 11.9 and before 10.14 did not properly sanitize the search_path during logical replication. An authenticated attacker could use this flaw in an attack similar to CVE-2018-1058, in order to execute arbitrary SQL command in the context of the user used for replication. (CVE-2020-14349)

 - A flaw was found in PostgreSQL's ALTER ... DEPENDS ON EXTENSION, where sub-commands did not perform authorization checks. An authenticated attacker could use this flaw in certain configurations to perform drop objects such as function, triggers, et al., leading to database corruption. This issue affects PostgreSQL versions before 12.2, before 11.7, before 10.12 and before 9.6.17. (CVE-2020-1720)

 - It was found that some PostgreSQL extensions did not use search_path safely in their installation script.
 An attacker with sufficient privileges could use this flaw to trick an administrator into executing a specially crafted script, during the installation or update of such extension. This affects PostgreSQL versions before 12.4, before 11.9, before 10.14, before 9.6.19, and before 9.5.23. (CVE-2020-14350)

 - A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. If a client application that creates additional database connections only reuses the basic connection parameters while dropping security-relevant parameters, an opportunity for a man-in- the-middle attack, or the ability to observe clear-text transmissions, could exist. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
 (CVE-2020-25694)

 - A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. An attacker having permission to create non-temporary objects in at least one schema can execute arbitrary SQL functions under the identity of a superuser. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-25695)

 - A flaw was found in the psql interactive terminal of PostgreSQL in versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. If an interactive psql session uses \gset when querying a compromised server, the attacker can execute arbitrary code as the operating system account running psql. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-25696)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2020-5620-1.html

Plugin Details

Severity: High

ID: 144564

File Name: oraclelinux_ELSA-2020-56201.nasl

Version: 1.6

Type: local

Agent: unix

Published: 12/23/2020

Updated: 5/11/2022

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2020-25696

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2020-25695

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:pgaudit, p-cpe:/a:oracle:linux:postgres-decoderbufs, p-cpe:/a:oracle:linux:postgresql, p-cpe:/a:oracle:linux:postgresql-contrib, p-cpe:/a:oracle:linux:postgresql-docs, p-cpe:/a:oracle:linux:postgresql-plperl, p-cpe:/a:oracle:linux:postgresql-plpython3, p-cpe:/a:oracle:linux:postgresql-pltcl, p-cpe:/a:oracle:linux:postgresql-server, p-cpe:/a:oracle:linux:postgresql-server-devel, p-cpe:/a:oracle:linux:postgresql-static, p-cpe:/a:oracle:linux:postgresql-test, p-cpe:/a:oracle:linux:postgresql-test-rpm-macros, p-cpe:/a:oracle:linux:postgresql-upgrade, p-cpe:/a:oracle:linux:postgresql-upgrade-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/22/2020

Vulnerability Publication Date: 2/13/2020

Reference Information

CVE: CVE-2020-14349, CVE-2020-14350, CVE-2020-1720, CVE-2020-25694, CVE-2020-25695, CVE-2020-25696

IAVB: 2020-B-0069-S