Amazon Linux AMI : exim (ALAS-2023-1722)

high Nessus Plugin ID 173943

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Synopsis

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

Description

The version of exim installed on the remote host is prior to 4.92-1.36. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1722 advisory.

- The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
(CVE-2021-38371)

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

Solution

Run 'yum update exim' to update your system.

Plugin Details

Severity: High

ID: 173943

File Name: ala_ALAS-2023-1722.nasl

Version: 1.0

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 4/6/2023

Updated: 4/6/2023

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

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-38371

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:exim, p-cpe:/a:amazon:linux:exim-debuginfo, p-cpe:/a:amazon:linux:exim-pgsql, p-cpe:/a:amazon:linux:exim-mon, p-cpe:/a:amazon:linux:exim-greylist, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:exim-mysql

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/30/2023

Vulnerability Publication Date: 8/10/2021

Reference Information

CVE: CVE-2021-38371

Detections

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