Amazon Linux 2 : postgresql (ALASPOSTGRESQL12-2024-007)

high Nessus Plugin ID 189478

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of postgresql installed on the remote host is prior to 12.17-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2POSTGRESQL12-2024-007 advisory.

- A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory. (CVE-2023-5868)

- A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through missing overflow checks during SQL array value modification. This issue exists due to an integer overflow during array modification where a remote user can trigger the overflow by providing specially crafted data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary bytes to memory and extensively read the server's memory. (CVE-2023-5869)

- A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack. (CVE-2023-5870)

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

Solution

Run 'yum update postgresql' to update your system.

Plugin Details

Severity: High

ID: 189478

File Name: al2_ALASPOSTGRESQL12-2024-007.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 1/24/2024

Updated: 2/16/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2023-5869

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:postgresql-llvmjit, p-cpe:/a:amazon:linux:postgresql-contrib, p-cpe:/a:amazon:linux:postgresql-plpython3, p-cpe:/a:amazon:linux:postgresql, p-cpe:/a:amazon:linux:postgresql-upgrade-devel, p-cpe:/a:amazon:linux:postgresql-docs, p-cpe:/a:amazon:linux:postgresql-pltcl, p-cpe:/a:amazon:linux:postgresql-server-devel, p-cpe:/a:amazon:linux:postgresql-test-rpm-macros, p-cpe:/a:amazon:linux:postgresql-plperl, p-cpe:/a:amazon:linux:postgresql-plpython2, p-cpe:/a:amazon:linux:postgresql-test, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:postgresql-debuginfo, p-cpe:/a:amazon:linux:postgresql-upgrade, p-cpe:/a:amazon:linux:postgresql-static, p-cpe:/a:amazon:linux:postgresql-server

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/19/2024

Vulnerability Publication Date: 11/9/2023

Reference Information

CVE: CVE-2023-5868, CVE-2023-5869, CVE-2023-5870

IAVB: 2023-B-0088-S

Detections

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