漏洞信息
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Vulnerability Title
Budibase: Potential SSRF DNS rebinding bypass in outbound fetch validation
Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Vulnerability Title
Budibase 竞争条件问题漏洞
Vulnerability Description
Budibase是英国Budibase公司开源的一个用于在几分钟内创建内部应用程序、工作流和管理面板的低代码平台。 Budibase 3.39.9之前版本存在竞争条件问题漏洞,该漏洞源于DNS重新绑定问题,可能导致具有自动化权限的经过身份验证的用户绕过SSRF黑名单,通过控制主机名在验证时返回公网IP而在实际连接时返回私有/内网IP,从而实现非盲SSRF攻击,影响访问内部服务。
CVSS Information
N/A
Vulnerability Type
N/A