CVE-2017-2669
7.5
HIGH
CVSS 3.1
EPSS 6.9%
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.
How to fix CVE-2017-2669
To remediate CVE-2017-2669, upgrade the affected package to a fixed version below.
- —upgrade to 1:2.2.27-3 or later
Is CVE-2017-2669 being exploited?
Moderate — EPSS is 6.9%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 1:2.2.27-3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |