CVE-2020-24386 Information disclosure in n/a

Medium 6.8 Published Updated

An authenticated attacker can access other users' emails and disclose paths via IMAP IDLE in Dovecot.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2020-24386?

CVE-2020-24386 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).

Which versions are affected by CVE-2020-24386?

It affects 3 products.

Linux distribution packages (18)
dovecot22 SUSE:Enterprise Storage 5All versions2.2.31-19.25.1
dovecot22 SUSE:HPE Helion OpenStack 8All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP2-BCLAll versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP2-LTSSAll versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP3-BCLAll versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP3-LTSSAll versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP4-LTSSAll versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server 12 SP5All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server for SAP Applications 12 SP2All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server for SAP Applications 12 SP3All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server for SAP Applications 12 SP4All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Server for SAP Applications 12 SP5All versions2.2.31-19.25.1
dovecot22 SUSE:Linux Enterprise Software Development Kit 12 SP5All versions2.2.31-19.25.1
dovecot22 SUSE:OpenStack Cloud 7All versions2.2.31-19.25.1
dovecot22 SUSE:OpenStack Cloud 8All versions2.2.31-19.25.1
dovecot22 SUSE:OpenStack Cloud 9All versions2.2.31-19.25.1
dovecot22 SUSE:OpenStack Cloud Crowbar 8All versions2.2.31-19.25.1
dovecot22 SUSE:OpenStack Cloud Crowbar 9All versions2.2.31-19.25.1

Products include Debian Debian Linux, Dovecot Dovecot, Fedoraproject Fedora.

How do I fix CVE-2020-24386?

Upgrade to a fixed version.

Is CVE-2020-24386 being exploited?

There is no known exploitation of CVE-2020-24386 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2020-24386, DEBIAN-CVE-2020-24386, GHSA-jp3r-27f3-r855, SUSE-SU-2021:0018-1, UBUNTU-CVE-2020-24386.

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