CVE-2025-53859

描述

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_mail_smtp_module that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happens during the NGINX SMTP authentication process and requires the attacker to make preparations against the target system to extract the leaked data. The issue affects NGINX only if (1) it is built with the ngx_mail_smtp_module, (2) the smtp_auth directive is configured with method "none," and (3) the authentication server returns the "Auth-Wait" response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

如何修補 CVE-2025-53859

要修補 CVE-2025-53859,請將受影響套件升級到下列已修補版本。

• —升級至 1.28.2-r0 或更新版本
• —升級至 1.29.1 或更新版本
• —升級至 1.29.1 或更新版本
• —升級至 1.18.0-6.1+deb11u6 或更新版本

CVE-2025-53859 正在被利用嗎?

低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。

受影響套件(4)

• from 0, < 1.28.2-r0
• >= 0.7.0, < 1.29.1
• >= 0.7.0, < 1.29.1
• from 0, < 1.18.0-6.1+deb11u6

CVSS 分數

參考連結(5)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2025-53859
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2025-53859
• WEBwww.openwall.com/lists/oss-security/2025/08/13/5
• WEBmy.f5.com/manage/s/article/K000152786
• WEB