Debian DSA-4536-1 : exim4 - security update

critical Nessus Plugin ID 129414
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

A buffer overflow flaw was discovered in Exim, a mail transport agent.
A remote attacker can take advantage of this flaw to cause a denial of service, or potentially the execution of arbitrary code.

Solution

Upgrade the exim4 packages.

For the stable distribution (buster), this problem has been fixed in version 4.92-8+deb10u3.

See Also

https://security-tracker.debian.org/tracker/source-package/exim4

https://packages.debian.org/source/buster/exim4

https://www.debian.org/security/2019/dsa-4536

Plugin Details

Severity: Critical

ID: 129414

File Name: debian_DSA-4536.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/30/2019

Updated: 12/23/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:exim4, cpe:/o:debian:debian_linux:10.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2019

Vulnerability Publication Date: 9/27/2019

Reference Information

CVE: CVE-2019-16928

DSA: 4536