Detections
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Exim < 4.96.1 Multiple Vulnerabilities

critical Nessus Plugin ID 183509

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Synopsis

The remote mail server is potentially affected by multiple vulnerabilities.

Description

According to its banner, the version of Exim running on the remote host is prior to 4.96.1. It is, therefore, potentially affected by multiple vulnerabilities:

 - NTLM Challenge Out-Of-Bounds Read (CVE-2023-42114)

 - AUTH Out-Of-Bounds Write (CVE-2023-42115)

 - SMTP Challenge Stack-based Buffer Overflow CVE-2023-42116)

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

Solution

Upgrade to Exim 4.96.1 or later.

See Also

https://exim.org/static/doc/security/CVE-2023-zdi.txt

Plugin Details

Severity: Critical

ID: 183509

File Name: exim_4_96_1.nasl

Version: 1.3

Type: remote

Published: 10/20/2023

Updated: 5/3/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2023-42115

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:exim:exim

Required KB Items: Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/5/2023

Vulnerability Publication Date: 10/5/2023

Reference Information

CVE: CVE-2023-42114, CVE-2023-42115, CVE-2023-42116