漏洞信息
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Vulnerability Title
N/A
Vulnerability Description
N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation. NOTE: N-able's position is that the behavior is intended functionality of its shared SMTP relay architecture and that the service does not represent that it enforces per-tenant sender-domain binding.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vulnerability Type
使用欺骗进行的认证绕过
Vulnerability Title
N-able Mail Assure 授权问题漏洞
Vulnerability Description
N-able Mail Assure是加拿大N-able公司的一款提供邮件安全防护与垃圾邮件过滤的云端服务。 N-able Mail Assure April 2026及之前版本存在授权问题漏洞,该漏洞源于授权设计缺陷,经过身份验证的SMTP用户可使用属于其他租户的MAIL FROM地址发送邮件,服务器接受任意发件人域名且未执行域名与账户的绑定,导致攻击者可冒充其他租户域名发送通过SPF和DMARC验证的邮件。
CVSS Information
N/A
Vulnerability Type
N/A