CVE-2026-107584— hMailServer 安全失败机制缺陷
一分钟漏洞结论
影响对象
Progressive Robot Ltd hMailServer
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Progressive Robot 指出，hMailServer 6.0.0 至 6.3.5 版本在通过 DANE（RFC 7672）应用对出站 SMTP 交付时存在“开放失败”（fails open）的安全漏洞。该服务器的 DNSSEC 验证解析器在处理以下三种情况时，均将收件人域名视为未签名（unsigned）： 1. TLSA 或 MX 查询未完成（例如返回 no answer、SERVFAIL 或格式错误的响应）； 2. 响应中不包含所请求的记录，且缺乏证明这些记录不存在的 NSEC/NSEC3 证据； 3
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一、 漏洞 CVE-2026-107584 基础信息
漏洞信息
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Vulnerability Title
Not Failing Securely ('Failing Open') in hMailServer
来源: CVE Program / CVE List V5
Vulnerability Description
Progressive Robot hMailServer 6.0.0 through 6.3.5 fails open when applying DANE (RFC 7672) to outbound SMTP delivery. The server's validating DNSSEC resolver treated a TLSA or MX lookup that did not complete (no answer, SERVFAIL, a malformed reply), an answer without the requested records and without an NSEC/NSEC3 proof of their absence, and an answer whose records carried no applicable RRSIG as if the recipient domain were unsigned, and from 6.2.19 it also delivered to mail exchangers taken from an unvalidated MX lookup that the DNSSEC-validated MX record set did not name. An attacker who can drop, forge or strip DNS answers on the path to the server's resolver, at the resolver, or between the resolver and the recipient domain's name servers, and who holds an active position on the SMTP path, can thereby disable DANE for a DNSSEC-signed recipient domain and cause messages to be delivered in cleartext or to a host of the attacker's choosing with an arbitrary certificate, where they can be read and modified.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Progressive Robot Ltd | hMailServer | 6.0.0 ~ 6.3.6 | - |
|
二、漏洞 CVE-2026-107584 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-107584 其他参考 (2)
同批安全公告 · Progressive Robot Ltd · 2026-10-08 · 共 22 条
| CVE-2026-103647 | 8.0 HIGH | hMailServer 跨站脚本漏洞 |
| CVE-2026-103010 | 7.8 HIGH | hMailServer 堆缓冲区溢出漏洞 |
| CVE-2026-107573 | 7.8 HIGH | hMailServer 默认权限配置错误漏洞 |
| CVE-2026-104658 | 7.8 HIGH | hMailServer 安全决策依赖不可信输入漏洞 |
| CVE-2026-104660 | 7.8 HIGH | hMailServer 缺少授权漏洞 |
| CVE-2026-104659 | 7.5 HIGH | hMailServer 邮件验证错误 |
| CVE-2026-107577 | 7.5 HIGH | hMailServer 无限循环漏洞 |
| CVE-2026-107574 | 7.5 HIGH | hMailServer 低效算法复杂度漏洞 |
| CVE-2026-107579 | 7.5 HIGH | hMailServer 算法复杂度低效漏洞 |
| CVE-2026-107576 | 7.5 HIGH | hMailServer 算法复杂度低效漏洞 |
| CVE-2026-103649 | 7.5 HIGH | hMailServer 同步访问远程资源无超时漏洞 |
| CVE-2026-104704 | 7.4 HIGH | hMailServer 敏感信息明文传输漏洞 |
| CVE-2026-107578 | 6.7 MEDIUM | hMailServer 链接解析不当导致远程代码执行漏洞 |
| CVE-2026-103011 | 6.5 MEDIUM | hMailServer 堆缓冲区溢出漏洞 |
| CVE-2026-107583 | 6.5 MEDIUM | hMailServer 算法复杂度低效漏洞 |
| CVE-2026-107572 | 6.5 MEDIUM | hMailServer 正则表达式复杂度低效漏洞 |
| CVE-2026-107581 | 6.5 MEDIUM | hMailServer 算法复杂度低效漏洞 |
| CVE-2026-107582 | 6.5 MEDIUM | hMailServer 算法复杂度低效漏洞 |
| CVE-2026-107580 | 6.5 MEDIUM | hMailServer 算法复杂度低漏洞 |
| CVE-2026-107587 | 5.9 MEDIUM | hMailServer 证书验证不当漏洞 |
显示前 20 条，共 22 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-107584
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