CVE-2024-23184
dovecot - security update
5.0
MEDIUM
CVSS 3.1
EPSS 0.84%
描述
Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive. With 100k header lines CPU usage is already 12 seconds, and in a production environment we observed 500k header lines taking 18 minutes to parse. Since this can be triggered by external actors sending emails to a victim, this is a security issue. An external attacker can send specially crafted messages that consume target system resources and cause outage. One can implement restrictions on address headers on MTA component preceding Dovecot. No publicly available exploits are known.
如何修補 CVE-2024-23184
要修補 CVE-2024-23184,請將受影響套件升級到下列已修補版本。
- —升級至 2.3.21.1-r0 或更新版本
- —升級至 1:2.3.13+dfsg1-2+deb11u2 或更新版本
- —升級至 1:2.3.13+dfsg1-2+deb11u2 或更新版本
- —升級至 1:2.3.19.1+dfsg1-2.1+deb12u1 或更新版本
CVE-2024-23184 正在被利用嗎?
低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。
受影響套件(4)
- from 0, < 2.3.21.1-r0
- from 0, < 1:2.3.13+dfsg1-2+deb11u2
- from 0, < 1:2.3.13+dfsg1-2+deb11u2
- from 0, < 1:2.3.19.1+dfsg1-2.1+deb12u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N |