CVE-2024-23184
Fixed in a distro release EPSS <1%CVSS 5.0
Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive. With 100k header lines CPU usage is already 12 seconds, and in a production environment we observed 500k header lines taking 18 minutes to parse. Since this can be triggered by external actors sending emails to a victim, this is a security issue. An external attacker can send specially crafted messages that consume target system resources and cause outage. One can implement restrictions on address headers on MTA component preceding Dovecot. No publicly available exploits are known.
Products: Open-Xchange GmbH OX Dovecot Pro
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 8 | dovecot | 1:2.3.16-6.el8_10 |
| AlmaLinux 8 | dovecot-devel | 1:2.3.16-6.el8_10 |
| AlmaLinux 8 | dovecot-mysql | 1:2.3.16-6.el8_10 |
| AlmaLinux 8 | dovecot-pgsql | 1:2.3.16-6.el8_10 |
| AlmaLinux 8 | dovecot-pigeonhole | 1:2.3.16-6.el8_10 |
| AlmaLinux 9 | dovecot | 1:2.3.16-11.el9_4.1 |
| AlmaLinux 9 | dovecot-devel | 1:2.3.16-11.el9_4.1 |
| AlmaLinux 9 | dovecot-mysql | 1:2.3.16-11.el9_4.1 |
| AlmaLinux 9 | dovecot-pgsql | 1:2.3.16-11.el9_4.1 |
| AlmaLinux 9 | dovecot-pigeonhole | 1:2.3.16-11.el9_4.1 |
| Alpine 3.21 | dovecot | 2.3.21.1-r0 |
| Alpine 3.22 | dovecot | 2.3.21.1-r0 |
| Alpine 3.23 | dovecot | 2.3.21.1-r0 |
| Alpine 3.24 | dovecot | 2.3.21.1-r0 |
| Amazon Linux 2023 | dovecot | 1:2.3.20-1.amzn2023.0.2 |
| Amazon Linux 2023 | dovecot-devel | 1:2.3.20-1.amzn2023.0.2 |
| Amazon Linux 2023 | dovecot-mysql | 1:2.3.20-1.amzn2023.0.2 |
| Amazon Linux 2023 | dovecot-pgsql | 1:2.3.20-1.amzn2023.0.2 |
| Amazon Linux 2023 | dovecot-pigeonhole | 1:2.3.20-1.amzn2023.0.2 |
| Debian 11 | dovecot | 1:2.3.13+dfsg1-2+deb11u2 |
| Debian 12 | dovecot | 1:2.3.19.1+dfsg1-2.1+deb12u1 |
| Debian 13 | dovecot | 1:2.3.21.1+dfsg1-1 |
| Debian 14 | dovecot | 1:2.3.21.1+dfsg1-1 |
| Red Hat Enterprise Linux 8 | dovecot | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-debuginfo | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-debugsource | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-devel | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-mysql | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-mysql-debuginfo | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-pgsql | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-pgsql-debuginfo | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-pigeonhole | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 8 | dovecot-pigeonhole-debuginfo | 1:2.3.16-6.el8_10 |
| Red Hat Enterprise Linux 9 | dovecot | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-debuginfo | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-debugsource | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-devel | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-mysql | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-mysql-debuginfo | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-pgsql | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-pgsql-debuginfo | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-pigeonhole | 1:2.3.16-11.el9_4.1 |
| Red Hat Enterprise Linux 9 | dovecot-pigeonhole-debuginfo | 1:2.3.16-11.el9_4.1 |
| Red Hat rhel eus 9.2 | dovecot | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-debuginfo | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-debugsource | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-devel | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-mysql | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-mysql-debuginfo | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-pgsql | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-pgsql-debuginfo | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-pigeonhole | 1:2.3.16-8.el9_2.1 |
| Red Hat rhel eus 9.2 | dovecot-pigeonhole-debuginfo | 1:2.3.16-8.el9_2.1 |
| Rocky Linux 8 | dovecot | 1:2.3.16-6.el8_10 |
| Rocky Linux 9 | dovecot | 1:2.3.16-11.el9_4.1 |
| SUSE Enterprise Storage 7.1 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | dovecot23 | 2.3.21.1-150200.76.1 |
| SUSE Manager Proxy 4.3 | dovecot23 | 2.3.15-150200.65.1 |
| SUSE Manager Server 4.3 | dovecot23 | 2.3.15-150200.65.1 |
| Ubuntu 20.04 LTS | dovecot | 1:2.3.7.2-1ubuntu3.7 |
| Ubuntu 22.04 LTS | dovecot | 1:2.3.16+dfsg1-3ubuntu2.4 |
| Ubuntu 24.04 LTS | dovecot | 1:2.3.21+dfsg1-2ubuntu6 |
| openSUSE Leap 15.5 | dovecot23 | 2.3.15-150200.65.1 |
| openSUSE Leap 15.6 | dovecot23 | 2.3.15-150200.65.1 |
| openSUSE Tumbleweed | dovecot23 | 2.3.21.1-1.1 |
| openSUSE Tumbleweed | dovecot24 | 2.4.0-1.1 |