Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Mutt vulnerability (USN-4645-1)

medium Nessus Plugin ID 143264

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by a vulnerability as referenced in the USN-4645-1 advisory.

- Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle. (CVE-2020-28896)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected mutt and / or mutt-patched packages.

See Also

https://ubuntu.com/security/notices/USN-4645-1

Plugin Details

Severity: Medium

ID: 143264

File Name: ubuntu_USN-4645-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 11/25/2020

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

CVSS Score Source: CVE-2020-28896

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:mutt, p-cpe:/a:canonical:ubuntu_linux:mutt-patched

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/25/2020

Vulnerability Publication Date: 11/23/2020

Reference Information

CVE: CVE-2020-28896

USN: 4645-1