漏洞信息
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Vulnerability Title
SAML Single Sign On <= 5.4.3 - Unauthenticated Authentication Bypass via 'SAMLResponse' Parameter Signature Algorithm Confusion
Vulnerability Description
The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass via SAML Signature Algorithm Confusion in all versions up to, and including, 5.4.3. The vulnerability exists because `Mo_SAML_Utilities::mo_saml_cast_key()` reads the `SignatureMethod` Algorithm attribute directly from the attacker-controlled `SAMLResponse` parameter rather than enforcing the locally configured algorithm, causing the plugin to recast the IdP's RSA public key as an HMAC-SHA1 shared secret and validate the forged signature against it. This makes it possible for unauthenticated attackers to forge a SAML assertion targeting any WordPress account — including administrators — obtain valid WordPress authentication cookies, and achieve full administrator-level account takeover.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Type
密码学签名的验证不恰当
Vulnerability Title
WordPress SAML Single Sign On – SSO Login 加密问题漏洞
Vulnerability Description
WordPress SAML Single Sign On – SSO Login是WordPress基金会的一款SAML单点登录插件。 WordPress SAML Single Sign On – SSO Login 5.4.3及之前版本存在加密问题漏洞,该漏洞源于直接从攻击者控制的SAMLResponse参数读取SignatureMethod算法属性,而不强制执行本地配置的算法,导致插件将IdP的RSA公钥重新转换为HMAC-SHA1共享秘密并验证伪造签名,这使得未经身份验证的攻击者能够伪造针对任何
CVSS Information
N/A
Vulnerability Type
N/A