Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : Exim vulnerability (USN-4366-1)

high Nessus Plugin ID 136731

Synopsis

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

Description

It was discovered that Exim incorrectly handled certain inputs. An remote attacker could possibly use this issue to access sensitive information or authentication bypass.

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-base, exim4-daemon-heavy and / or exim4-daemon-light packages.

See Also

https://usn.ubuntu.com/4366-1/

Plugin Details

Severity: High

ID: 136731

File Name: ubuntu_USN-4366-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 5/20/2020

Updated: 1/4/2021

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

Risk Information

CVSS Score Source: CVE-2020-12783

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:exim4-base, 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:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.10, cpe:/o:canonical:ubuntu_linux:20.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/19/2020

Vulnerability Publication Date: 5/11/2020

Reference Information

CVE: CVE-2020-12783

USN: 4366-1