CVE-2024-23184: Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive

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Posted by Aki Tuomi via Fulldisclosure on Aug 17

Affected product: Dovecot IMAP Server
Internal reference: DOV-6464
Vulnerability type: CWE-770 (Allocation of Resources Without Limits or Throttling)
Vulnerable version: 2.2, 2.3
Vulnerable component: lib-mail
Report confidence: Confirmed
Solution status: Fixed in 2.3.21.1
Researcher credits: Vendor internal discovery
Vendor notification: 2024-01-30
CVE reference: CVE-2024-23184
CVSS: 5.0 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N)…

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