CVE-2017-11429 : Exploit Details and Defense Strategies

Clever saml2-js versions 2.0 and earlier may have a vulnerability related to XML canonicalization and DOM traversal, potentially allowing authentication bypass.

Understanding CVE-2017-11429

This CVE involves a flaw in the usage of XML DOM traversal and canonicalization APIs in Clever saml2-js versions 2.0 and earlier, which could be exploited by attackers.

What is CVE-2017-11429?

The vulnerability in Clever saml2-js versions 2.0 and earlier allows attackers to manipulate SAML data without affecting the cryptographic signature, potentially leading to authentication bypass.

The Impact of CVE-2017-11429

CVSS Base Score: 7.7 (High Severity)
Confidentiality Impact: High
Attack Vector: Network
Privileges Required: Low
Scope: Changed
User Interaction: None

Technical Details of CVE-2017-11429

Clever saml2-js versions 2.0 and earlier are affected by this vulnerability.

Vulnerability Description

The flaw in XML DOM traversal and canonicalization APIs could allow attackers to manipulate SAML data without invalidating the cryptographic signature, potentially enabling authentication bypass.

Affected Systems and Versions

Affected Product: saml2-js
Vendor: Clever
Versions: < 1.0, < 2.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating SAML data without affecting the cryptographic signature, potentially bypassing authentication to SAML service providers.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update Clever saml2-js to a secure version that addresses the vulnerability.
Monitor for any unauthorized access or unusual activities related to SAML authentication.

Long-Term Security Practices

Regularly review and update security configurations and protocols related to SAML implementations.
Conduct security assessments and audits to identify and mitigate potential vulnerabilities.

Patching and Updates

Apply patches and updates provided by Clever for saml2-js to fix the vulnerability and enhance security measures.