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Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.10 : Postfix vulnerability (USN-6591-1)

medium Nessus Plugin ID 189292

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by a vulnerability as referenced in the USN-6591-1 advisory.

 Timo Longin discovered that Postfix incorrectly handled certain email line endings. A remote attacker could possibly use this issue to bypass an email authentication mechanism, allowing domain spoofing and potential spamming.

 Please note that certain configuration changes are required to address this issue. They are not enabled by default for backward compatibility. Information can be found at https://www.postfix.org/smtp- smuggling.html.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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://ubuntu.com/security/notices/USN-6591-1

Plugin Details

Severity: Medium

ID: 189292

File Name: ubuntu_USN-6591-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/22/2024

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2023-51764

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:postfix-mysql, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:postfix-sqlite, p-cpe:/a:canonical:ubuntu_linux:postfix, p-cpe:/a:canonical:ubuntu_linux:postfix-lmdb, p-cpe:/a:canonical:ubuntu_linux:postfix-ldap, p-cpe:/a:canonical:ubuntu_linux:postfix-pgsql, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:postfix-dev, p-cpe:/a:canonical:ubuntu_linux:postfix-cdb, p-cpe:/a:canonical:ubuntu_linux:postfix-pcre, cpe:/o:canonical:ubuntu_linux:16.04:-:esm

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/22/2024

Vulnerability Publication Date: 12/24/2023

Reference Information

CVE: CVE-2023-51764

USN: 6591-1