GLSA-202101-01 : Dovecot: Multiple vulnerabilities

medium Nessus Plugin ID 144821
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


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


The remote host is affected by the vulnerability described in GLSA-202101-01 (Dovecot: Multiple vulnerabilities)

Multiple vulnerabilities have been discovered in Dovecot. Please review the CVE identifiers referenced below for details.
Impact :

A remote attacker could send a specially crafted mail or send a specially crafted IMAP command possibly resulting in a Denial of Service condition or an authenticated remote attacker might be able to discover the file system directory structure and access other users’ emails.
Workaround :

The information disclosure vulnerability can be mitigated by disabling IMAP hibernation feature which isn’t enabled by default.


All Dovecot users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-mail/dovecot-2.3.13'

See Also

Plugin Details

Severity: Medium

ID: 144821

File Name: gentoo_GLSA-202101-01.nasl

Version: 1.2

Type: local

Published: 1/11/2021

Updated: 1/13/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-24386


Risk Factor: Medium

Score: 5.2


Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: AV:N/AC:M/Au:S/C:P/I:P/A:N

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


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:dovecot, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 1/10/2021

Vulnerability Publication Date: 1/4/2021

Reference Information

CVE: CVE-2020-24386, CVE-2020-25275

GLSA: 202101-01