Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : Exim vulnerability (USN-4075-1)

critical Nessus Plugin ID 127096

Synopsis

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

Description

Jeremy Harris discovered that Exim incorrectly handled sort expansions. In environments where sort expansions are used, a remote attacker could possibly use this issue to execute arbitrary code as root.

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.

See Also

https://usn.ubuntu.com/4075-1/

Plugin Details

Severity: Critical

ID: 127096

File Name: ubuntu_USN-4075-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 7/26/2019

Updated: 9/17/2020

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

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:canonical:ubuntu_linux:exim4-daemon-heavy, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/25/2019

Vulnerability Publication Date: 7/25/2019

Reference Information

CVE: CVE-2019-13917

USN: 4075-1