A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart.
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Score 5.9 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.9; sources differ by 0.0.
A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart.
March 2, 2018
November 21, 2024
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | dovecot-core (1:2.0.19-0ubuntu2.5) @ precise | 2026-05-28 | ubuntu |
| ubuntu | dovecot-core (1:2.2.27-3ubuntu1.3) @ artful | 2026-05-28 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
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ubuntu
CWE-400