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FreeBSD : exim -- a buffer overflow vulnerability, remote code execution (316b3c3e-0e98-11e8-8d41-97657151f8c2)

critical Nessus Plugin ID 106733

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

Exim developers report :

There is a buffer overflow in base64d(), if some pre-conditions are met. Using a handcrafted message, remote code execution seems to be possible.

Solution

Update the affected package.

See Also

https://exim.org/static/doc/security/CVE-2018-6789.txt

http://www.nessus.org/u?212493c5

Plugin Details

Severity: Critical

ID: 106733

File Name: freebsd_pkg_316b3c3e0e9811e88d4197657151f8c2.nasl

Version: 3.7

Type: local

Published: 2/12/2018

Updated: 12/6/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

CVSS Score Source: CVE-2018-6789

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:exim, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/10/2018

Vulnerability Publication Date: 2/5/2018

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2018-6789