CVE-2017-2669
7.5
HIGH
CVSS 3.1
EPSS 4.6%
描述
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.
如何修補 CVE-2017-2669
要修補 CVE-2017-2669,請將受影響套件升級到下列已修補版本。
- —升級至 1:2.2.27-3 或更新版本
CVE-2017-2669 正在被利用嗎?
低 — EPSS 為 4.6%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 1:2.2.27-3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| 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 |