Resource exhaustion in Dovecot - CVE-2024-23185

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Main Vulnerability Database Vulnerabilities #VU96021

Resource exhaustion in Dovecot - CVE-2024-23185

Published: August 14, 2024


Vulnerability identifier: #VU96021
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-23185
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when parsing overly large email headers. A remote attacker can send a specially crafted email to the server, trigger resource exhaustion and perform a denial of service (DoS) attack.


Affected software

Dovecot
Oracle Linux
Debian Linux
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Anolis OS
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Slackware Linux
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
SUSE Linux Enterprise Server 15 SP4 LTSS
Server Applications Module
openSUSE Leap
openEuler
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
dovecot-core (Ubuntu package)
dovecot
dovecot-debuginfo
dovecot-debugsource
dovecot-devel
dovecot-help
dovecot23-fts-debuginfo
dovecot23
dovecot23-backend-sqlite-debuginfo
dovecot23-fts-solr
dovecot23-fts-squat
dovecot23-backend-mysql
dovecot23-debugsource
dovecot23-debuginfo
dovecot23-devel
dovecot23-backend-mysql-debuginfo
dovecot23-fts-lucene
dovecot23-backend-pgsql-debuginfo
dovecot23-fts-lucene-debuginfo
dovecot23-fts-solr-debuginfo
dovecot23-fts-squat-debuginfo
dovecot23-backend-sqlite
dovecot23-backend-pgsql
dovecot23-fts
dovecot-mysql
dovecot-pgsql
dovecot-pigeonhole
dovecot (Red Hat package)
dovecot (Debian package)

How to mitigate CVE-2024-23185

Install updates from vendor's website.

Dovecot - update to 2.3.21.1
dovecot-core (Ubuntu package) - addressed in versions 1:2.3.7.2-1ubuntu3.7, 1:2.3.16+dfsg1-3ubuntu2.4, 1:2.3.21+dfsg1-2ubuntu6
dovecot - update to 2.3.15-6
dovecot-debuginfo - update to 2.3.15-6
dovecot-debugsource - update to 2.3.15-6
dovecot-devel - update to 2.3.15-6
dovecot-help - update to 2.3.15-6
dovecot23-fts-debuginfo - update to 2.3.15-150200.65.1
dovecot23 - update to 2.3.15-150200.65.1
dovecot23-backend-sqlite-debuginfo - update to 2.3.15-150200.65.1
dovecot23-fts-solr - update to 2.3.15-150200.65.1
dovecot23-fts-squat - update to 2.3.15-150200.65.1
dovecot23-backend-mysql - update to 2.3.15-150200.65.1
dovecot23-debugsource - update to 2.3.15-150200.65.1
dovecot23-debuginfo - update to 2.3.15-150200.65.1
dovecot23-devel - update to 2.3.15-150200.65.1
dovecot23-backend-mysql-debuginfo - update to 2.3.15-150200.65.1
dovecot23-fts-lucene - update to 2.3.15-150200.65.1
dovecot23-backend-pgsql-debuginfo - update to 2.3.15-150200.65.1
dovecot23-fts-lucene-debuginfo - update to 2.3.15-150200.65.1
dovecot23-fts-solr-debuginfo - update to 2.3.15-150200.65.1
dovecot23-fts-squat-debuginfo - update to 2.3.15-150200.65.1
dovecot23-backend-sqlite - update to 2.3.15-150200.65.1
dovecot23-backend-pgsql - update to 2.3.15-150200.65.1
dovecot23-fts - update to 2.3.15-150200.65.1
dovecot - update to 2.3.16-5.0.1
dovecot-devel - update to 2.3.16-5.0.1
dovecot-mysql - update to 2.3.16-5.0.1
dovecot-pgsql - update to 2.3.16-5.0.1
dovecot-pigeonhole - update to 2.3.16-5.0.1
dovecot (Red Hat package) - addressed in versions 2.3.16-6.el8_10, 2.3.16-8.el9_2.1, 2.3.16-11.el9_4.1
dovecot (Debian package) - update to 1:2.3.19.1+dfsg1-2.1+deb12u1
dovecot - update to 2.3.21.1
dovecot - addressed in versions 2.3.21.1-1.fc39, 2.3.21.1-1.fc40

External References

Related Security Bulletins