Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : exim4 vulnerability (USN-3565-1)

High Nessus Plugin ID 106791

Synopsis

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

Description

Meh Chang discovered that Exim incorrectly handled memory in certain decoding operations. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected exim4-daemon-heavy and / or exim4-daemon-light packages.

Plugin Details

Severity: High

ID: 106791

File Name: ubuntu_USN-3565-1.nasl

Version: 3.6

Type: local

Agent: unix

Published: 2018/02/13

Modified: 2018/08/07

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSSv3

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: p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:17.10

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/02/12

Reference Information

CVE: CVE-2018-6789

USN: 3565-1