CVE-2020-2252
Improper Validation of Certificate with Host Mismatch in Jenkins Mailer Plugin
描述
Jenkins Mailer Plugin prior to 1.32.1, 1.31.1, and 1.29.1 does not perform hostname validation when connecting to the configured SMTP server. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections. Mailer Plugin 1.32.1, 1.31.1, and 1.29.1 validates the SMTP hostname when connecting via TLS by default. In Mailer Plugin 1.32 and earlier, administrators can set the Java system property mail.smtp.ssl.checkserveridentity to true on startup to enable this protection. In case of problems, this protection can be disabled again by setting the Java system property mail.smtp.ssl.checkserveridentity to false on startup.
如何修補 CVE-2020-2252
要修補 CVE-2020-2252,請將受影響套件升級到下列已修補版本。
- —升級至 1.32.1 或更新版本
CVE-2020-2252 正在被利用嗎?
低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 1.32, < 1.32.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |