Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 : Mutt vulnerability (USN-4645-1)

Low Nessus Plugin ID 143264

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VPR Score: 3.6

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: Low

ID: 143264

File Name: ubuntu_USN-4645-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2020/11/25

Updated: 2020/12/15

Dependencies: 12634

Risk Information

Risk Factor: Low

VPR Score: 3.6

CVSS Score Source: CVE-2020-28896

CVSS v2.0

Base Score: 2.6

Temporal Score: 1.9

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

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

CVSS v3.0

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, cpe:/o:canonical:ubuntu_linux:20.10, p-cpe:/a:canonical:ubuntu_linux:mutt, p-cpe:/a:canonical:ubuntu_linux:mutt-patched

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/11/25

Vulnerability Publication Date: 2020/11/23

Reference Information

CVE: CVE-2020-28896

USN: 4645-1