漏洞信息
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Vulnerability Title
phpseclib: X.509 certificate validation sends attacker-controlled outbound requests (server-side request forgery) via Authority Information Access
Vulnerability Description
phpseclib is a PHP secure communications library. From 0.1.1 until 1.0.30, 2.0.55, and 3.0.54, when an application validates an untrusted X.509 certificate with phpseclib, X509::validateSignature() reads a URL out of that certificate's Authority Information Access (AIA) extension and connects to it. Attacker who supplies certificate fully controls host, port, and path of that connection. URL fetching is enabled by default, and no destination is blocked. An unauthenticated attacker can therefore make a validating server open connections to internal hosts and ports it should never reach, for example loopback 127.0.0.1, cloud metadata address 169.254.169.254, and internal-only services. This is a server-side request forgery (SSRF) caused by an insecure default. This vulnerability is fixed in 1.0.30, 2.0.55, and 3.0.54.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
phpseclib 服务端请求伪造漏洞
Vulnerability Description
phpseclib是phpseclib组织开源的一个 PHP 安全通信库。 phpseclib存在服务端请求伪造漏洞,该漏洞源于不安全默认设置,在验证不可信X.509证书时从证书的AIA扩展中读取URL并连接,可能导致未经身份验证的攻击者使验证服务器向内部主机和端口发起连接,造成服务端请求伪造。
CVSS Information
N/A
Vulnerability Type
N/A