CVE-2021-38189
SMTP command injection in body
9.8
CRITICAL
CVSS 3.1
EPSS 1.5%
描述
Affected versions of lettre allowed SMTP command injection through an attacker's controlled message body. The module for escaping lines starting with a period wouldn't catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write arbitrary SMTP commands after it. The flaw is fixed by correctly handling consecutive CRLF sequences.
如何修補 CVE-2021-38189
要修補 CVE-2021-38189,請將受影響套件升級到下列已修補版本。
- —升級至 0.9.6 或更新版本
- —升級至 0.9.6 或更新版本
CVE-2021-38189 正在被利用嗎?
低 — EPSS 為 1.5%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- >= 0.7.0, < 0.9.6
- >= 0.7.0, < 0.9.6, >= 0.10.0-alpha.1, < 0.10.0-rc.3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |