vulnerability
FreeBSD: VID-A8C8001B-216C-11E7-80AA-005056925DB4 (CVE-2017-2669): dovecot -- Dovecot DoS when passdb dict was used for authentication
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Dec 1, 2016 | May 2, 2017 | May 3, 2019 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Dec 1, 2016
Added
May 2, 2017
Modified
May 3, 2019
Description
Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.
Solution(s)
freebsd-upgrade-package-dovecotfreebsd-upgrade-package-dovecot2
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