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FreeBSD : exim -- remote DoS attack in BDAT processing (75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f)

high Nessus Plugin ID 104944

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Synopsis

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

Description

Exim developers team reports :

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.

Solution

Update the affected package.

See Also

https://bugs.exim.org/show_bug.cgi?id=2199

http://www.nessus.org/u?0d397a7c

Plugin Details

Severity: High

ID: 104944

File Name: freebsd_pkg_75dd622cd5fd11e7b9fec13eb7bcbf4f.nasl

Version: 3.6

Type: local

Published: 12/1/2017

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

Temporal Vector: CVSS:3.0/E:P/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: 11/30/2017

Vulnerability Publication Date: 11/23/2017

Reference Information

CVE: CVE-2017-16944