The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
- CVSS 3.0 Base Score: 3.1
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade dovecot | Aug 22, 2024 | Feb 12, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Feb 12, 2020 |
| Suse | — | Upgrade dovecot23-backend-sqliteUpgrade dovecot23Upgrade dovecot23-develUpgrade dovecot23-fts-squatUpgrade dovecot23-ftsUpgrade dovecot23-backend-pgsqlUpgrade dovecot23-fts-luceneUpgrade dovecot23-fts-solrUpgrade dovecot23-backend-mysql | Feb 4, 2022 | Feb 12, 2020 |
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