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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : SpamAssassin vulnerability (USN-4899-1)

critical Nessus Plugin ID 148279

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4899-1 advisory.

 - In Apache SpamAssassin before 3.4.5, malicious rule configuration (.cf) files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA version 3.4.5, users should only use update channels or 3rd party .cf files from trusted places. (CVE-2020-1946)

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 sa-compile, spamassassin and / or spamc packages.

See Also

https://ubuntu.com/security/notices/USN-4899-1

Plugin Details

Severity: Critical

ID: 148279

File Name: ubuntu_USN-4899-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/1/2021

Updated: 10/16/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2020-1946

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:sa-compile, p-cpe:/a:canonical:ubuntu_linux:spamassassin, p-cpe:/a:canonical:ubuntu_linux:spamc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2021

Vulnerability Publication Date: 3/25/2021

Reference Information

CVE: CVE-2020-1946

IAVA: 2021-A-0148

USN: 4899-1