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CVE-2018-5387

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Date: July 24, 2018

Wizkunde SAMLBase may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

Language: PHP

Severity Score

Related Resources (7)

https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3
https://github.com/GoGentoOSS/SAMLBase
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
https://github.com/GoGentoOSS/SAMLBase/issues/3
https://www.kb.cert.org/vuls/id/475445
https://nvd.nist.gov/vuln/detail/CVE-2018-5387
https://www.mend.io/vulnerability-database/CVE-2018-5387

Severity Score

Weakness Type (CWE)

Authentication Issues

CWE-287

Improper Verification of Cryptographic Signature

CWE-347

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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