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CVE-2024-23184

5.0 · MEDIUM

Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive.

Published Sep 10, 2024CWE-770EPSS 0.84%

Overview

CVE-2024-23184 is a medium-severity vulnerability. It was published on September 10, 2024 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdocumentation.open-xchange.com/dovecot/security/advisories/csaf/2024/oxdc-adv-2024-0002.jsonRefseclists.org/fulldisclosure/2024/Aug/17Refwww.openwall.com/lists/oss-security/2024/08/15/3Reflists.debian.org/debian-lts-announce/2024/09/msg00002.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-23184?

CVE-2024-23184 is a medium-severity vulnerability. It was published on September 10, 2024 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2024-23184?

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-23184?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-23184?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-23184 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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