Red Hat Security Advisory: dovecot security update
Two vulnerabilities in Dovecot, an IMAP and POP3 server, can lead to denial of service or resource exhaustion. CVE-2024-23184 involves triggering denial of service by using a large number of address headers. CVE-2024-23185 involves resource exhaustion caused by very large headers during message parsing. These issues affect Red Hat Enterprise Linux 9 and related variants. A security update addressing these vulnerabilities is available from Red Hat.
AI Analysis
Technical Summary
Dovecot contains two security issues: CVE-2024-23184 allows denial of service by processing an excessive number of address headers, and CVE-2024-23185 causes resource exhaustion when parsing very large message headers. Both vulnerabilities relate to improper handling of email headers, potentially impacting server availability. Red Hat has released a security update for Red Hat Enterprise Linux 9 and its extended update support versions to fix these issues.
Potential Impact
Exploitation of these vulnerabilities can cause denial of service or resource exhaustion on affected Dovecot servers, potentially disrupting email services. There is no indication of remote code execution or data compromise. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has issued an official security update (RHSA-2024:6529) for Dovecot on Red Hat Enterprise Linux 9 and related variants. Applying this update will remediate the vulnerabilities. Users should follow Red Hat's guidance at https://access.redhat.com/articles/11258 to apply the patch. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: dovecot security update
Description
Two vulnerabilities in Dovecot, an IMAP and POP3 server, can lead to denial of service or resource exhaustion. CVE-2024-23184 involves triggering denial of service by using a large number of address headers. CVE-2024-23185 involves resource exhaustion caused by very large headers during message parsing. These issues affect Red Hat Enterprise Linux 9 and related variants. A security update addressing these vulnerabilities is available from Red Hat.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Dovecot contains two security issues: CVE-2024-23184 allows denial of service by processing an excessive number of address headers, and CVE-2024-23185 causes resource exhaustion when parsing very large message headers. Both vulnerabilities relate to improper handling of email headers, potentially impacting server availability. Red Hat has released a security update for Red Hat Enterprise Linux 9 and its extended update support versions to fix these issues.
Potential Impact
Exploitation of these vulnerabilities can cause denial of service or resource exhaustion on affected Dovecot servers, potentially disrupting email services. There is no indication of remote code execution or data compromise. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has issued an official security update (RHSA-2024:6529) for Dovecot on Red Hat Enterprise Linux 9 and related variants. Applying this update will remediate the vulnerabilities. Users should follow Red Hat's guidance at https://access.redhat.com/articles/11258 to apply the patch. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:6529
- Cve Count
- 2
- Additional Cves
- ["CVE-2024-23185"]
Threat ID: 6a3da1f04853345fc183212c
Added to database: 06/25/2026, 21:47:28 UTC
Last enriched: 06/25/2026, 22:43:51 UTC
Last updated: 09/10/2026, 19:36:47 UTC
Views: 30
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