漏洞信息
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Vulnerability Title
Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured
Vulnerability Description
Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured.
verify_xml in Net::SAML2::Role::VerifyXML runs "return if !$anchors && !$cacert;" as soon as the XML::Sig check succeeds, and that check uses the X.509 certificate taken from the response's own dsig:KeyInfo/dsig:X509Certificate element, so an unanchored response is checked only against the key it carries. Binding::POST declares cacert as an optional Maybe[Str] with no default, so a POST binding built without one takes that path, and _verify_encrypted_assertion returns early the same way with "return $xml unless $cacert;".
Any caller that constructs Binding::POST or calls Assertion->new_from_xml without a cacert, cert_text, or anchors argument accepts a response signed by an attacker generated key whose self-signed certificate is embedded in that response, authenticating an arbitrary assertion.
CVSS Information
N/A
Vulnerability Type
密码学签名的验证不恰当
Vulnerability Title
TIMLEGGE Net::SAML2 加密问题漏洞
Vulnerability Description
timlegge Net::SAML2是timlegge个人开发者的一款实现SAML2协议的Perl库。 TIMLEGGE Net::SAML2 0.86之前版本存在加密问题漏洞,该漏洞源于未配置信任锚时,verify_xml 使用响应中嵌入的X.509证书验证响应,可能导致SAML身份验证被绕过。
CVSS Information
N/A
Vulnerability Type
N/A