Bugzilla – Bug 1180405
VUL-0: CVE-2020-24386: dovecot: IMAP hibernation allows users to access other users' emails
Last modified: 2021-09-10 12:06:50 UTC
via oss-security: Open-Xchange Security Advisory 2021-01-04 Product: Dovecot Vendor: OX Software GmbH Internal reference: DOP-2009 (Bug ID) Vulnerability type: CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences Vulnerable version: 2.2.26-2.3.11.3 Vulnerable component: imap Report confidence: Confirmed Solution status: Fixed by Vendor Fixed version: 2.3.13 Vendor notification: 2020-08-17 Solution date: 2020-08-27 Public disclosure: 2021-01-04 CVE reference: CVE-2020-24386 CVSS: 8.2 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N) Vulnerability Details: When imap hibernation is active, an attacker can cause Dovecot to discover file system directory structure and access other users' emails using specially crafted command. The attacker must have valid credentials to access the mail server. Risk: Attacker can access other users' emails and filesystem information. Workaround: Operators can choose to disable IMAP hibernation. IMAP hibernation is not on by default. To ensure imap hibernation is disabled, make sure imap_hibernate_timeout is set to 0 or unset. Solution: Operators should update to 2.3.13 or later version.
SUSE-SU-2021:0018-1: An update that fixes one vulnerability is now available. Category: security (important) Bug References: 1180405 CVE References: CVE-2020-24386 JIRA References: Sources used: SUSE OpenStack Cloud Crowbar 9 (src): dovecot22-2.2.31-19.25.1 SUSE OpenStack Cloud Crowbar 8 (src): dovecot22-2.2.31-19.25.1 SUSE OpenStack Cloud 9 (src): dovecot22-2.2.31-19.25.1 SUSE OpenStack Cloud 8 (src): dovecot22-2.2.31-19.25.1 SUSE OpenStack Cloud 7 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Software Development Kit 12-SP5 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server for SAP 12-SP4 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server for SAP 12-SP3 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server for SAP 12-SP2 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP5 (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP4-LTSS (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP3-LTSS (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP3-BCL (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP2-LTSS (src): dovecot22-2.2.31-19.25.1 SUSE Linux Enterprise Server 12-SP2-BCL (src): dovecot22-2.2.31-19.25.1 SUSE Enterprise Storage 5 (src): dovecot22-2.2.31-19.25.1 HPE Helion Openstack 8 (src): dovecot22-2.2.31-19.25.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
SUSE-SU-2021:0028-1: An update that fixes 5 vulnerabilities is now available. Category: security (important) Bug References: 1174920,1174922,1174923,1180405,1180406 CVE References: CVE-2020-12100,CVE-2020-12673,CVE-2020-12674,CVE-2020-24386,CVE-2020-25275 JIRA References: Sources used: SUSE Linux Enterprise Module for Server Applications 15-SP2 (src): dovecot23-2.3.11.3-17.5.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
SUSE-SU-2021:0029-1: An update that fixes three vulnerabilities is now available. Category: security (important) Bug References: 1174920,1180405,1180406 CVE References: CVE-2020-12100,CVE-2020-24386,CVE-2020-25275 JIRA References: Sources used: SUSE Linux Enterprise Server for SAP 15 (src): dovecot23-2.3.11.3-4.32.1 SUSE Linux Enterprise Server 15-LTSS (src): dovecot23-2.3.11.3-4.32.1 SUSE Linux Enterprise High Performance Computing 15-LTSS (src): dovecot23-2.3.11.3-4.32.1 SUSE Linux Enterprise High Performance Computing 15-ESPOS (src): dovecot23-2.3.11.3-4.32.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
SUSE-SU-2021:0027-1: An update that fixes three vulnerabilities is now available. Category: security (important) Bug References: 1174920,1180405,1180406 CVE References: CVE-2020-12100,CVE-2020-24386,CVE-2020-25275 JIRA References: Sources used: SUSE Linux Enterprise Module for Server Applications 15-SP1 (src): dovecot23-2.3.11.3-21.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
openSUSE-SU-2021:0026-1: An update that fixes three vulnerabilities is now available. Category: security (important) Bug References: 1174920,1180405,1180406 CVE References: CVE-2020-12100,CVE-2020-24386,CVE-2020-25275 JIRA References: Sources used: openSUSE Leap 15.2 (src): dovecot23-2.3.11.3-lp152.2.6.1
openSUSE-SU-2021:0072-1: An update that fixes three vulnerabilities is now available. Category: security (important) Bug References: 1174920,1180405,1180406 CVE References: CVE-2020-12100,CVE-2020-24386,CVE-2020-25275 JIRA References: Sources used: openSUSE Leap 15.1 (src): dovecot23-2.3.11.3-lp151.2.15.1
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