GLSA-202003-47 : Exim: Heap-based buffer overflow

critical Nessus Plugin ID 134775
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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-202003-47 (Exim: Heap-based buffer overflow)

It was discovered that Exim incorrectly handled certain string operations.
Impact :

A remote attacker, able to connect to a vulnerable Exim instance, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.
Workaround :

There is no known workaround at this time.

Solution

All Exim users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=mail-mta/exim-4.92.3'

See Also

https://security.gentoo.org/glsa/202003-47

Plugin Details

Severity: Critical

ID: 134775

File Name: gentoo_GLSA-202003-47.nasl

Version: 1.2

Type: local

Published: 3/23/2020

Updated: 3/25/2020

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:gentoo:linux:exim, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 3/20/2020

Vulnerability Publication Date: 9/27/2019

Reference Information

CVE: CVE-2019-16928

GLSA: 202003-47